An old mindset for Burned. This is thread 8.

[Twofeet]

Every CC has a primary account holder and an authorized user. Make the phone calls. If you are the primary then pull her name off as the authorized user and get a new number and card issued to you. If she is the primary then get your name off her card and shred your card on her account. Get written confirmations of all of this from the CC company, preferably email.
Then once all that is done go take care of the automatic payments. Sure its a hassle, but the consequences are much worse than being inconvenienced for a day.