Gabriel- You are going through a lot right now. Take some time to breathe
As far as W wanting plastic surgery....doesn't necessarily mean it is to impress someone else. Not that you totally feel that way but you may think it a bit.
She is insecure with herself and how she looks. Kinda like just being tired and feeling blah. Don't read too much into it.
You did right on making her pay her way though. That is not YOUR job anymore. She has to be totally independent since the D was HER decision. She has to learn that she no longer has you to fall back on for HER support finacially.
I know you will provide for S5 and IMO that should be it. Hang in there Gabriel....things will get better. Give it time.