Thank you, Sarandipity, the Gang and MDs.
I took a long walk and that helped.
It is an expression in my culture, at least among older people, I think. She was talking about rebellious teenagers that may not accept the current measures of staying home, etc. I think she realized her "mistake", because she added: "so they would need to have a stern conversation". But I'd already spiralled away inside and was so triggered I could barely move or see straight or talk.
Maybe she didn't notice, I don't know. I told her, but maybe she didn't realize.
Either way, some protector parts are clearly like: "Ok, fun and games are over. Stay the hell away from her!" and I think it is fair. She is scary, even if she doesn't mean to be. And she told us today of other people she is talking to, so I feel less bad for "letting her down". This is just not something I'm willing to deal with on top of everything else. It's not safe for me.