A bit of background - starting seeing a girl who was a classmate back in high school (I'm early 30's now, much more rp than the BP I was back then). It's been a month and I already was up front with her with my views on marriage (not getting married) and that I wouldn't be introducing her to my kids for a long time since I don't want them meeting a revolving door of women.

Everything seems to be going fine, sex is good, I don't put up with her shit tests, etc. My oldest daughter had a school concert and I found out the day of it that this girls son was in it too, so she'd be there. I get to the concert and sit with my youngest daughter (ex and her fiancé are there too). Had a good time and was proud of my kiddo, walked out with the kids and gave them a hug and told them I'd see them soon when they came over. I had some shopping to do after so I booked it the hell out of there to get past the traffic rush. I'm then greeted with this text:

Her: I saw you there :)

Me: You did huh? I'm grocery shopping right now

Her: I was even standing in front of you, I turned my head and smiled at you at one point.

Me: I must not have noticed, My kids had my attention.

No response the rest of the night.

Next day I texted her and just got a "Morning" and that's it. Then I checked my Tinder and lo and begold, there she is with a very, very recent pic of her and her son.

My take is, I'm there for my kid that night, not her. And I'm not introducing her to my kids out of the blue or being forced into a situation to do it. And it looks like she got pissy and made a Tinder account after.

Her attitude before this was fine - do I state my case and try to keep things going, just plate her, or move on?