trying to get her back

[Intact]

Is it wrong of me to feel a little "I told you so" about W.
I mention to her a while back, that "She could not save a dime".
she has used up all her money, has no more retirement funds.
now she wants more money from me.

Not wrong of you to feel like that at all in my opinion. I wouldn't say it too her though. She will likely already be perfectly aware.