My Beloved Elder Sister's life

Im a Gchild who is the youngest in my family who is spoiled by my mother and psychologically abused by my older brother, but this rant is not about me or how their decisions and actions have affected me directly, it's about how those two have destroyed the family and made my older sister (who is the only one who treated me like a normal kid and tried to raise me like her own) have a terrible life and how I wish they just take responsibility for their actions and how I wished everyone in my family valued my words when I was trying to help my sister.

To give you the background, we are a family of immigrants and my older sister being the only one who can speak English and had to handle adult things because my mum felt too embarrassed to ask her relatives or because she didn't trust the other relatives (I don't know which) and because of that my sister lost a lot of her childhood, teenage hood and adult hood (for other reasons caused by mum). Skip to years later, I was in my final senior year of highschool trying to raise my marks for university. My brother had a full time job, my sister moved to a different state for her full time job and was living in a tiny studio apartment. Mum one day saw how much was in my brother's bank account and for some reason thought it was a good idea to use his entire savings to buy another house. Sister said this wasn't a good idea and why it was such a stupid idea and stated she refused to do so. In any normal situation, people, regardless of how stupid and uneducated they are, would understand the words "bankruptcy". FUCK NO! NOT THIS ONE! SHE WANTED TO SPEND ON A HOUSE! and not just want a house for herself, SHE WANTS MY SISTER TO HAVE A HOUSE! Which is outside of our affordability range. So she told my sister to use up all of our family's money, my sister refused. She and mum argued for many weeks on this and even though sister said she doesn't need a house, mum kept nagging, incessantly. Sister can't cut off communication from her because me and brother lives with her and mum still needs help. Sister is chained.

When mum finally realizes she can't convince sister to own her own house, she triednto convince my sister to help our brother to buy a house, when he had no interest in owning a house. Sister tried to convince brother to tell mum to shut up about buying the house, but he said he wouldn't because he wants no part in it. Sister eventually caved in, spoke to brother about buying a house that is the most cheapest so it wouldn't dry up our savings. He had a full time job and was able to pay off the loan and body corporate fees and he liked the idea of getting back money through some tax rebate law if he owned a house (I think thats what appealed to him). So, a house was bought (after a whole lot of options considered and she was in a rush) sister moved into it from her tiny rented apartment, only to find out the damn thing is a shittier place than it looks until you use it (e.g roof had issues, air entered from between the bricks so you would still freeze even if you had the air con on). Things were still good, brother had anreally good job and was fine with paying off some renovations and relieve her of some other extra expenses.

Until, a few months later he quit his job (without warning), unble to pay for the needed renovations and body corporate fees, causing sister to stay there, t9 renovate the entire place and pay for it for nearly her entire pocket. This affected any opportunity for her to have any work life balance and majority of her time she's working to help support three un-employed family members, renovate and hold her job that she can't quit from because it's the only job she is able to get at this stage. To make matters worse, if she sells the place now, she can't sell enough to recuperate the money she has spent on fixng the damn place, rentint it out isn't an option because she has no time to find anyone to rent a room and the place is still a massive mess after 6 years.

I remember before she was about to buy the place, I was trying to tell brother how this will affect sister and how it's not much trouble to tell mum to back off. He just told me "I DON'T WANT TO GET INTO IT! I tried telling mum not to talk to sister about buying a house, but she just ignored me. I tried to tell sister to just lie to mum  about the house but she said that mum will catch her out on her lie and will just continue to guilt her into helping brother buy a house. I remember so much because I couldn't concentrate on my studies and I felt like running away so much and I felt so much anguish for my sister.

Six years have passed, mum has said "See aren't you glad I bought that house for you" and all sorts of crap, brother wants the house he previously had no interest in, for himself without paying for all of the body corporate fees and pay for the rest of the renovations (previously sister mixed his money into the renovations, but now she wants he has to pay for the rest if he wants it back) that has been done to the house and my sister is just getting emotionally and psychologically worse because mum and brother refuse to hear her out, understand and care about the situation she is in.

I told brother that I tried warning him of this, he said "don't try to act smart". I feel like I saw the future six years ago and I was helpless to prevent it. Now I'm thinking of studying stocks or poker playing (most likely not, but there is that option as some have got rich in the past from it) to earn enough money for my sister to live comfortably. I want to see her live a happy, relaxing fulfilling life. I don't care if mum and brother will hate me for it, I want to see sister be happy and relaxed because she deserved so much more than what she has right now. Everyone has damaged me including sister in some way, but she is, out of everyone, who has actively helped the family and asked for nothing back other than peace and decent respect in return.

I feel so upset and down that I don't feel like learning to draw and do my other hobbies until I type this down and post this.

Note: if it's incoherent or there are a lot of mistakes, that's because I did it on a mobile device and due to the apps capacity to hold a certain amount of words I had to save this entire thing in two different parts, copy and pasted each separate thing here to prevent the issue of me posting it and finding out I have to retype it all because my webpage timed out.

Summary: Mum and older brother are the narcissists, I am the Golden child who has been spoiled. My sister is the unfortunate one in this family who had her life stuffed up the most and I watched her life being ruined to the point of no return and I couldn't do anything to stop it, even though it's not my fault and I had nothing to do with it even though sister assures me I have done nothing wrong, I still want to help her.