friend problems 😖

i’m finishing my last semester abroad along with 2 of my best friends the only problem is that there’s some weird tension between one of them and me. my friend has had a hard life growing up and i haven’t. she’s typically a very negative person and will always joke about my insecurities and we usually jokingly say hurtful things. the past few weeks she’s been getting worse and i haven’t been able to fully communicate with her. a few days ago she snapped me (yes snapchat 🙄) and blamed me for ruining everything. she called me selfish, someone who plays the victim, self-absorbed about guys, among others and even took a dig at my family by saying she can’t be friends with someone who can buy a $250 blanket (we’re in mexico and it’s a hand embroidered traditional blanket) and has a dad who puts money into their account. she wouldn’t listen to anything that i said despite her not being supportive of me in my future endeavors (i’ve had a job offer and interviews and she doesn’t ask about a single one) and every time i mention someone in my life that isn’t apart of my family she’ll heavily bash them and tell me how terrible they are to the point where i can’t even share things that make me happy. her attack on me got to the point where she had blocked me yet she has her snap set so that people can still message her no matter what (defeats the purpose i know) and continued to yell at me after realizing i screenshotted our conversation. i ended up blocking her on everything because i can’t handle being treated like shit and being constantly belittled to feel like shit. she told me i always talk about problems but do nothing to fix them (i.e. having a boy harass me but never block him EVEN though i did???) and just like to hear myself talk. she prides herself on being mature but she couldn’t bring this up in person and still continues to talk to this guy that she hates (also has him blocked but he can still message her). honestly idk i’m just confused about this all because it quite frankly came out of nowhere and now i have to spend the next 4 weeks surrounded by her and her negativity :/