Wow, I can see your dilemma here Thornton. And her decision to leave her job and move when she basically has no cash - well that's all on her. Actually, she could have stayed in stable employment and found herself and her D a new place locally if she so chose.
I can understand your desire to accede to her request, given that you want to keep in touch with your SD. I think it is pretty surprising she asked and I would be wary about bankrolling her move or anything further than this.
However, I think it would be an option to let her know that you would be happy to link with your SD and help her organise what she wants to have in her new place, working to an agreed budget. You could then go as far as ordering it online and paying for it to be delivered to their new place, so you know this will be exactly how the funds will be used.
Perhaps the process could be a bridge to you keeping in touch with your SD. You could also let your W know that you would like to keep in touch with your SD and ask her to remain supportive of your ongoing contact with SD, even if your R with her has ended.
I'm not sure if you have any 'joint' financial arrangements at all - but if you do, I would certainly get that stuff signed, sealed and sorted and end end potential grey areas financially.
Hope this helps anyway Thornton :-)
T 13 M 7 Me 48 H 46 SS 15 BD 7.14 PA D final 5.16 (H filed)
We receive & we lose, and must try to achieve gratitude & embrace with whole hearts whatever of life that remains after the losses - Dubus