Bf mom being ridiculous. Am I wrong?

So my boyfriend and I have been living with his mom because of the pandemic and we both got laid off. I’m to the point where I don’t want to stay in that house anymore because of his mom. My bf and recently are in quarantine because we both tested positive for COVID but were cleared in a few days since we’ve been isolated for almost two weeks at a hotel (for people tested positive). We go back Tuesday and I’m dreading it. So we took my car to the hotel and his mom was renting a rental under my name. I extended the rental for her telling her she didn’t have to pay me back and she doesn’t even say thank you but complain and says “it would’ve been easier if you just let me use your car.” Then I hear she’s talking shit about how I didn’t give her my car smh. she continued to keep bugging me about getting my car from us but I told her the staff won’t let anyone come onsite since we have covid. After I told her that she goes and asks my bf to tell him to ask the staff and try to “scare them.” Lmfao she’s so fuckin ridiculous. I already told her no and the only reason why she wants my car is so she and her friends can go to bingo or casino. Even at home she’s so dependent on my car and she had a doctors appointment one day and she says “ I need your car I have appointments tomorrow.” She don’t even ask , she just expects me to drop everything I’m doing and tend to her. So when we get back home I’m not letting her use my car,nothing. Am I wrong for doing that?