Is it normal i do not want a relationship with my boyfriends mom

I know I have posted a few things about my bf and his mom. Well I'm just being honest..I do not want a relationship with my bfs mom. In the past 5 months, the relatonship seems like it's being forced and slightly fake. I do not want to hurt her feelings by just saying it because when I have told her my feelings about how she treat me, she seem as if it flew over her head and honestly, some things just do not need to be said. I'm tired of feeling like I'm competing with her for the affectionate and time with my bf(her son.) I found it easier so far really relaxing and less stress not speaking to her or having to be pushed around by her or seeing my bf being suckered into things by her. I've been home now for two months bc I stayed their cor college. Me and her are definitely not on speaking terms because of an inccident that happened right before the day I was going home for the summer. She was ease dropping on my convo that I was having with my mom *to point out, in her home, there's no privacy, she is always budding her nose in things that do no concern her* Anyway she busted into the room saying that I need to get out of the relationship with her son of i'm not happy, she was really bi***y. My mom was like umm what was that about and i'm like I'll call you back mom. His mom slammed the door and tried to call my bf at his job but she didnt have the extension number plus he was calling my phone so i answered it and she overtalked me telling her son that she never get in our business but u done alot for this girl and thought u need to know that she isn't happy and i told her that she need to get out of the relationship, i told her do not disrespect me and I won't disrespect u. She then called me a lier saying that i was talking to her other sons gf about him lol it was so funny bc i just told his mom that i talked to her a few hours ago to see if she wanted to hang out. His mom overly exaggerates and is always trying to plee to her son that she is being the best mom that she can be and that she is doing everything for me and her other sons gf. A little history before I came into the picture..her other sons gf and her didn't get along to the point where she wanted to always control her sons and exclude the gfs by doing their laundry and wearing their underwear, take money from their wallets,..the list goes on. The other sons gf told me that she had to leave the home also because she couldn't take it watching their mom do all of those things and gossip then lie about it. I told her that I guess I won't be any different. So pretty much the mom talked about her other sons gf to her neice about how her parents are drunks and that's why she is a drunk(the gf) Her son(not my bf) called her and demanded that she apologized to his gf, then the mom started the whole crying thing like someone hurt her feelings. So the gf hasn't been back since because it has been more than that occasion that th mom has gossiped about her. Now again, I do not want a relationship with her because of my experiences with her and knowing that she has done that to her other sons gf and they've been together for 4 years..she isn't going to change. I've taken myself out of the circle and keeping the distance because I shoudln't have to deal with her ways especially if she think she's entitled to acting that way and we as gfs aren't suppose to call her out on it..bull crap.