Well, as someone who probably got $3500 in TOTAL for 8 years of child support (no Spousal whatsoever) - YES - she should be paying HALF! But your daughter has no right whatsoever to take your credit card - that is stealing! And you should only pay for the applications you agree to. This girl is out of hand. Her sense of "entitlement" is right up there with her mothers. Though, as the mom of a 21 year old daughter - it is not uncommon that these kids do feel "entitled" and learn to use and abuse us. It is not OK and I'd be making myself perfectly clear to her about that.