I mean, LW is of course free to draw a boundary that Bonnie can't come to holiday events he's in control of (ie are happening at her house/at her expense). I suspect he won't like the consequences, but she is within her rights to do so.

But really, yeah, two things pop out:

WHY doesn't she like Bonnie? Because there are circumstances wherein this is entirely fair. But his use of "this woman" and (assuming it wasn't just trimmed out for posting) lack of explanation implies to me that there's something inherent about Bonnie she's taken a dislike to, and my immediate gut instinct is to assume something nasty on LW's part. (Bonnie's a different race, Bonnie's a different religion, Bonnie's trans, Bonnie's openly queer, etc).

Yeah, her kids probably know more than he does, but on the other hand, if Gma and Gpa haven't said anything else about their relationship with Bonnie then actually what should be pointed out to them is that this is what Gma and Gpa have elected to communicate and to mind their manners.


eta: AHAHA WATCH ME ASSUME THE WRONG GENDER. *facepalm*

I am deeply fond of Abby's "who are probably more worldly than either you or I", tho. XD