I think it might be a moot point anyway. Unless the bill is a joint account I am not even sure you can still get copies. I recently read somewhere that cell phone companies are being sued left and right for disclosing this info without proper subpoenas, to PI's for example. Not sure how true this is as I can't remember where I read it...Like SU77 said I am sure she could find out if you did request a copy of her bill. That wouldn't be good either. Either way it erodes whatever trust may be left between you two.
Me: 30 EX-H: 37 DD: 5 Separated 6/07. MC for months, EX-H quit MC. Divorce Final 8/14/08. Trying to move on with new life.