Am I wrong? Is my relationship toxic

So I’m going to make a long story short I’m in an interracial relationship with a white man and I’m Muslim and he wasn’t but he’s working on converting ( by choice). Everything is fine with us but his mom is a bitch and he won’t speak up!! It’s makes me upset because she’s always asking for money or coming over unannounced and she also smells like fish and piss so when she sits on my sofa it stinks. She is also racist as fuck here are some messages she sent me because she asked for some pics of us but she posted them on Facebook and I told him, my husband doesn’t like being posted on social media because he is an officer and he’s rather not be mixed up in her crazy life and the nasty shit she posts on Facebook.

Yeah so after that he didn’t do ANYTHING he just said shes crazy ignore her and I was like wtf so she has made more comments about me picking cotton saying she’s glad I got molested and yesterday she was trying to kill herself and all i could do was laugh ( not to her face) because she does this all for attention she’s a bitter bitch and then I asked her about the photos in her house and said I never took a family photoshoot and she said it’s because my mom was traveling all over to talk to different men first of all my mom went to see her husband who is in Africa and I was like don’t say shit about my mom and he just stood there? I’m about to leave him because I can’t keep getting disrespected I told him if he says something to her and check her then she’ll stop saying stuff like that to me and he won’t then on top of that she’s always asking him to buy her stuff then wants to complain that I don’t have a job when I’m going to school right now and tells me I’m lazy and need to work  what should I do. It’s not like we can get away from her we rent the house we have from his dad and she always says it’s not my house and I cook and clean and spend the little money I have buying shit for the house but it’s not my house ? And even he says its not my house and I’m just so upset because he ignores my feelings and says that nigger is just a word even though he has never said it to me it’s like that’s what he stands for. In my religion your husband is your provider and he is supposed to take care of you and his mother but she’s married her husband takes care of her why does my husband have to he is my husband and he doesnt even like her talks a lot of shit about her should I Give him an ultimatum and say it’s either me or her or what ?I’m fed up she even talks about our future children calling them salt and pepper mitts and mix breed saying she’s gonna snatch the hijab off if they wear one. Please help me !!! Because this is causing problems in my relationship