Women with kids- dealbreaker? AITA?

Long post- stay with me pls lol

Me (fem) and Jay (stud) started talking years ago (both single, no kids) it was only text never in person. We stopped talking for like 2.5 years when I moved away then I moved back and now we talk again. It was always FWB vibes so we finally linked in person at her place and had sex. I get there and notice kids toys in her apt but didn't say anything bc I'm just the sneaky link didn't wanna push it.

She never formally told me she ever got pregnant/had a son in the time we weren't talking. We had sex then the next day she just slid it in the convo like "I gotta go pickup my son" and I was caught off guard but again didn't say anything. But last I thought she was a single stud lesbian now she's a whole single mom who doesn't even identify as stud. I mean these are big changes from the person I was talking to before.

Now.. the 1st time i came to her place her son wasn't there, we had sex in her bed. The 2nd time we had sex in the living room and suddenly I hear noises and realize her son is in the backroom sleep. I didn't like that. I didn't know he'd be there since the 1st time he wasn't. I assumed she found a babysitter again or something idk.

Fast forward to today, I ask if she's alone and she's acting almost offended that I asked her that. She's like "oh you mean alone without my son?" I'm like I mean alone! Lol we just fwb I'm not comfortable having sex with other people's kids in the house.

[Note I've never talked to women with kids, I normally wouldn't, she didn't have a kid when I 1st met her, AND she never had a formal talk ab it. I always have to ask her which feels pushy but shouldn't I know who I'm involved with? ]

She started talking ab how she doesn't have a support system and she normally wouldn't talk to people with kids either so I should just talk to someone else. (Tbh I agree) but you could tell she was tryna make me feel bad.

Like "you should just be with someone on your level bc obviously I'm not there" and stuff like that. Like girl.. don't be mad at me bc you got pregnant and regret it (she's told me this) and now it's messing up your dating life. That's not my problem. AITA?

I told her I'm just looking for FWB not a relationship so her having a son doesn't bother me i just would prefer not having sex when he's there. But this offended her.

What are yalls thoughts? We're just sneaky links tbh so i feel valid to say I don't want your kid around. She made me feel stupid by saying "how do you think people w kids have sex? Obviously when the kids asleep." but I'm like ok that's when you're a couple not when you invite random ppl in to fuck. And im not random random but like.. I don't know her like that tbh. It's weird right??

Have yall been w women with kids? It's a deal-breaker for you? What about FWB? AITA?