Colleague turned friend turned roommate and now is my worst enemy (long text ahead i really need a third party opinion!!) Help!!

When i (22F) started law school i befriended a colleague (23F), things were cool in the beginning, im very quite and private and she's more outgoing and a borderline oversharer, i didn't mind because i have many extroverted friends and being different than ur friends isn't necessarily a problem for me, we were friends for about 8 months then one of my roommates moved out and i brought it up, she said she's looking to move out of her parents house (she lives in the same city our uni is in) and she moved in, thing surely went downhill after turns out she's very very messy and dirty, me and third roommate really struggled with that and the other roomie actually fought with her many many times and sadly most of it was the friends fault (using peoples dishes,food (i found out by accident literally the roomies friend was over and i overheard them...) leaving the bathroom dirty not cleaning the common area not even once in our 13 months living there, me and the other roomie clean every week) i never said anything (huge huge mistake dont ever stay quiet) and even apologized on her behalf to our roommate since im the one who brought her it got to the point that the roomie finished school and moved back home we had dinner and a talk she got me a gift all without speaking to my friend ( who lost it when she realized the roomie got me a gift) fast forward a couple months and a new roomie moved she ended up fighting with her also and being very rude and competitive towards me in school (humiliating me in front of others and moving crazy jealous even though we both are doing good in school and she's doing even better!!!! last summer break i went home crying to my friends and family about how bad she treated me) since the day we met she made many many comments about me getting an allowance and being rich (not really just my parents give me money its not even all that at all and i never ever brag the money isnt mine its my parents clearly!!!!) i got her gifts,clothes cleaned up when she never did i buy groceries and clean

at some point she applies for student exchange and get hit with the fact that she needs to move back home to save money and she announces it (in a very weird way telling every one alone and saying things like i have huge news we need to talk ect and its just her moving like 30 mins away? and told all of our friends and our stranger roommate before me knowing we were super close) anyway i didnt react much because i was in the middle of my exams (she finished obvi) and she lost it !!!!!!!! started bringing crazy non-student girls (potential roommates) without asking us, lied about telling the landlord about her move when she didn't, cleared out her room in 2 days, brought guys i have never met over and it got to the point of her accusing me and the roomie of stealing cash from her room (literally no?)

my thing is im not interested in repairing anything she crossed many many red lines we have been living together for 1.5 years almost and ive known her for 2, should i just keep ignoring the crazy outbursts knowing she's always seeking attention and this is a great retaliation or should i open things up ? i kinda wanna read her to filth but on the other side she's crazy and i can just leave her talking to her self.....

there's a lot of details its obvi not black and white...

***i tried to text her many times asking to talk after she lost it she ignored me and the rommie lowkey for a week then simply showed up and made dinner (with a week in the fridge old chicken!!!) and pretend that we are all cool....