LMW, stick with jp's advice here. You simply can't accurately mind read a WAW (XX at the end of a text, getting upset about kids going away for a few days), and especially a wayward one. She probably doesn't even know how she's going to feel 1 minute from now.
Also, get even more detached from that R she's in. If he's the guy you think he is, she will eventually hit a wall with him. But I think this sitch is unique in that you probably need to verify it is him, for your kid's safety. I don't even know what you could do at that point, but I would start with confirming that.
Me 38, WAW 30 D11 (former marriage) S2 T 8 years M 3 years BD 8/20/23 S 8/20/23