I NEED some advice here pls help

I don't know what to do anymore. So I moved out to live with a friend and her family about a year ago because of abuse circumstances with my mother, so the people I live with are not blood. My friends mother that I live with is amazing, she took me in, she cares about me, etc and I hate to complain. But there is a major flaw. Basically because of past circumstances, I have a fear of pissing people off. Irrational and dumb, but I do. And as great as my friends mother is, she loves to avoid conflict, and say things are fine when they are not. So for example, I have accidentally upset her before and only found out weeks later after noticing how she seems off towards me and begging my friend to tell me whats up. So 1 when I do accidentally upset her, she doesn't let me know it bothers her so I feel like whatever it is is okay and I keep doing it, causing her to be annoyed over and over again and 2 she shows it a bit, like I can see when I've done something wrong but even when I ask, she doesn't tell me, she just shrugs it off. I have asked her a few times to please be honest with me when she is upset with me so I at least can help to prevent from doing it in the future and for some reason she still just doesn't. I have explained it, I have politely told her how much I would appreciate it, but nothing changes. I know I can't make her change but at this point I don't know what to do. I'm scared to ever ask for or do anything and thats clearly not right but I get scared because there's DEFINITELY a chance that it will upset her but I will never know and I will just get the cold shoulder and stuff for a while. Maybe I should care less or forget about it but I'm not sure...any advice, at all...?