My sister outed me ...

I'm on my phone so please forgive any grammatical mistakes or spelling errors.Backstory: My mom is an extremely conservative person, jobs where I live are few and far between so because of this I have to continue to live with her. My sister is the only person who I thought I could trust with knowing I'm gay. I'm 20 years old and my sister is 16. We are supposed to be on vacation in the family travel trailer.I'm sure a lot of you have heard this story before.Story: My sister and I got into an argument over some petty bullshit and I got drawn in and called her a bitch. That was probably the worst thing I could've done. She stormed off and told my mom "Your gay son called me a bitch" She then looks over her shoulder with one of those " oops did I do that? 😈" faces. My mom then looks at me and says " Get Out, Pack your shit and get out " At this point I start walking towards my stuff and start shoving random shit into my backpack. I was scared that I would have to start looking for a homeless shelter at that time. My mom then goes into a rant about how she doesn't have a gay son and if she did he should get AIDS and die because that's all gays are useful for. She then followed up with how she read online that all gay men have issues taking a shit. I was shocked and just grabbed my random backpack full of stuff and started texting one of my best friends to try and keep me from doing something very dumb ( He doesn't have a Reddit account but I'd like to give him credit for me being here to tell you this). He told me two things the first is that to kick me out she needs to give me an eviction notice and second that she couldn't kick me out because she doesn't drive. I had forgotten about this and I walked outside for an hour or two to cool off. I offered her an ultimatum. She can let me stay and continue to save /help out and I will move out asap or she can try and evict me and wait for the courts (where I live it can take months to evict ). We talked about it and she's letting me stay and we went out to a fast food joint ( We do this when the family argues as being in a public place helps keep us from screaming matches). On the way home it hit me like a truck that my mom told me to get AIDS and die. Right now I feel like shit and I just needed to vent.My question: Does anyone have any tips at all for this kind of situation?I apologize for the wall of text. I will try and answer any questions posted but I will probably pass out .