Thanks, Mike.
No, she hasn't made final payment.
We are actually sailing as a group & I didn't want to have to worry about the details, so I decided to go with a TA (from a very large reputable "cruises only" agency - huge mistake). I'll save you the laundry list of problems that I am trying to get ironed out, but I don't think they'll be much help.
One would think that if she is willing to add a 2nd room & pay more for her current room, they could figure something out, but they want to charge her more then the non-group rate currently available on the site.