So the general advice here has been "stop letting W's parenting (or lack thereof) get to you" but something happened on Friday that's a real problem for me. Not a "this makes me feel bad" problem, but a real problem.
D was sick (W says strep) and went to the doctor. After appointment, W had D call me and ask for money for "medicine and popsicles" because W apparently didn't have any money. I was over 50 miles away, and W put D in the middle of an adult conversation, and in the position of asking me for something I couldn't deliver (and I'm pretty sure wasn't really necessary, anyway).
I say I'm pretty sure this was unnecessary because I later got a text from W spewing about how she sees there are things more important than D, and she'd get the money somehow. Complained that the antibiotics were over $60 (but she has a debit card for medical expenses, which means to her the cost was actually $0). The "desperately needed money" was $10 for tylenol and popsicles.
So I basically feel that W just tried to weaponize D. What the hell can I do about that?