Someone lost a job because of me, and I couldn't do anything about it.

I 18M, currently waiting to go to a college want to share something. Basically where I live it is very common to have 2-3 househelpers and in my house there were 2 helpers working (1 for dusting and mopping the floor and 1 for washing clothes and kitchen utencils) (Dishwasher are not very common here). So the 1st helper is a middle aged woman, very punctual, comes early in the morning and is good in her work. My family has no complaint from her. And here comes the true story:

The 2nd helper is an elderly woman who is not very punctual. In her early days of job she used to come early like the 1st one. But as time went one she delayed her arrival in our house and used to come like 1PM in our house, super-late cause she might have agreed to work in other houses too (this is also very common). But the timing was not very suitable for my family, my mother and grandma would be resting and the only person to look after her was me. My mother tried to tell her that she should come early but she disagreed for like 6 months. Now, I am going to a college and there would be no one to look after her.

One day there was 3 sandwitches in the kitchen made for my father and at nearly 2 PM I ate one of them. Later, my mother asked me if I ate one and I was not paying attention to her question and i said NO. Now, a drastic pause. My mother and grandma suspected the 2nd helper for it and it was too late for me to say YES. Ik that I have done really really bad thing to lie without any reason and someone else was blamed for it. I felt really bad.

But now here comes the thing, my mother and grandma was already suspecting the 2nd helper was stealing some oil from our house and 2 days later when I would be gone for college there would be noone to look after her, causing trouble to my mom and grandma. They even thought of saying her to leave the job after my admission in college. Idk if she had taken it or not, maybe my mother would ask her to leave or not. But cause of this my mom got her rest completely in noon.

My mom and grandma asked her to either come early like 1st one or not come to work and take her pay. So she decided to leave and take her money finally.

But at the end, anything don't matter cause I did a sin, I did an evil deed. It was my mistake that she lost her job. There is no confession box around here so I am typing this here. I am sure she was also wanting to leave from her house and she would get another house to work for (it is very common here). I am sure she would not most likely worked in my house but it was because of me who lost her job. I didn't do it intentionally neither I wanted her to leave like that. I felt really guilty and I swear that I would not lie this seriously again and pay attention to my surroundings. I am very sorry and Ik karma would it me in the back whenever time would come and I couldn't hold this sin inside me and take to college. I swear again I would not lie and do anything like this and advise everyone to do the same and not lie about something you did. Just admit and move on. It was too late for me now to tell the truth and my mom dad would have killed me if I told the truth.
Sorry again.
What more could I have done?