Should I just ignore the mf ?

I’m not going to get into the background of everything but this is now, so my bf bm use to hate my guts because he didn’t want to b with her ( those are her words not mines his or anyone else’s assumptions ) her and I had a long talk a few months ago and she said she was going to try and b “ better “ so fast forward to two weeks ago she stated “ I can hold my spit and call you step momma “ lol not that it mattered to me because I don’t consider myself that nor do I overstep my boundaries BUT we do talk a few times a week ( via text ) sometimes she a call if it’s important but for the most part I communicate with her alot better than my boyfriend. He doesn’t like her because he states she’s two faced which she seems. Which brings me to my question. Should I just ignore it and keep going ??!, she texts me like everything is fine etc but I can see and hear the irritation she gets when she calls my dude and her daughter starts asking where I’m at and asking to speak to me . She gets irritated when she wants to FaceTime her daughter off of her iPad we got her when she’s with us and her daughter doesn’t want to talk, or brings me up. Is all of this hidden resentment towards me or something ? I’m just curious, and I want to ask her but I don’t want to “ stir the pot “ or create an issue that isn’t there..ya know? But I don’t get why she pretends to b coo with me , even tells me her personal business and life ( like when she had a miscarriage I was the first person she called , even when she first found out she was even pregnant she told me first ) idk lol..if there’s any additional detail that I can include to help y’all understand where I’m coming from lmk I just want someone’s words of advice