However, since she 'want a divorce' then you need to show her that a divorce means she has to be responsible for her own bills. Wake up call time.
You just be civil and tell her that she needs to pay for certain things, and that includes her cell phone.
What would you do if you were divorced? With my W I figured out what she would get legally for child support and other stuff, then said 'this is what I'll pay for, the rest is up to you.'
It isn't your job to 'take care of her beyond what the law requires. And she needs to start to 'feel what it's like' not to have access to your checkbook.
