she seriously she's gonna make me rip my hair out!!!

anon
What the hell am i suppose to do with this freaking women? Am I in the wrong? Please let me know..... I left an abusive home sometimes physically but mostly emotionally, I had just turned 18 when I left and moved in with my boyfriend (which he lives with his grandparent) it's all I dreamed for ever since I had met him, he had become my safe haven, I still think of him as my safe haven, I went from being absolutely nothing, no job, no birth certificate or any important papers like so, to getting help with get those important papers, getting a job, going to school, saving up for a car, (was going to school quit for now bc can't afford classes at the moment) that is a whole nother story, but I have always had a issue with my boyfriends mother let's call her, jade first  name I could think of lol, well jade has a drug addiction, alcohol addiction, and she uses people to get what she wants, she steals money from her children, and stolen my clothes, and much much more, I've told my boyfriend before to please not let her in  our room I had him buy a Minnie fridge and put it in our room because I didn't want her taking food I bought with money i worked hard for..... and it had turned into a big argument him telling me he can't just tell him mom that blah blah blah, I had to get over and realize nothing was going to be able be done unless I was there to stop her from going threw things anyways let's fast forward to this weeks events, I was givin a 200 dollars check, spent 75 on snowboarding, 40 into my savings, and spent 30 on last nights dinner and couple of snacks that leaves me with what 55 dollars? For the next two weeks.. (well thankfully my bills aren't this check lol) anyways I bought dinner, started prepping it and what not and my boyfriends cousin is over we are the in the kitchen talking along with my boyfriend grandmother (my boyfriend had gone to put gas in his cousins car for her bc it was dark and a lot of weirdos where we live...) well I'm making dinner and I'm at the stove when jade came threw the door and started screaming yelling about how she hates my boyfriends dad saying he's a piece of shit he can bring there younger daughter over to do homework but can give her five dollars blah blah blah and nobody said anything, I was trying to cook dinner in peice so I said really? Why do you need to come over and do this? And she started going of on me and was getting rude saying "really? Really? I come over here because I need someone to vent to and I'm not going to sit in that fucking house with him he won't even give me money" and just the crap she was saying was just pissing me the freak of so I chose to just ignore her my boyfriend came back home and his cousin left I forgot to mention she was over bc I was giving  dinner for her and her family  they are losing their home and can barely afford to pull food to the table so made enough for them to have dinner as well I told him what happened and he told me not to get in the middle of it to ignore her because that's just how she is, I was hurt because like what the freak dude haha.... we were bickering back and fourth afterwards she came back after my boyfriend and I had dinner and started serving herself a plate of food and I got mad and had told him I hope she doesn't think she can eat my food which she did and long story short he was raising his voice at me slamming things down freaking at me bc I said that, he told me she's human if she wants eat why can't she, the argument continued over text messages because he left for work these were a few of our messages
My boyfriend stopped replying to me and his cousin messaged me thanking me for dinner telling me jade was crazy, I told her everything that happened and she told
Me this, I'm done, I ended up telling her basically what can I do? She came
Over starting crap when I told her to knock it off she went out and was a crazy bitch saying that creepy shit to her? Then she proceeds by coming back and eating my food after she says that? Am I in the wrong here??? Someone please help, I'm suppose to be getting ready for work rn but am just so bothered by this..