If she's on pain medication, which I suspect she is, two weeks out from surgery, that's probably contributing to or causing the constipation. I'd try to find a non-narcotic painkiller that works and double- or triple- up on the Metamucil. I'm sure the doctors have already discussed this with her, but that's my only thought at the moment. She might try to alter her diet as well. I have to stay away from cheese if I want to avoid becoming excessively constipated.
Dx: 3/09, Stage 4 RC
Recurrences: (ongoing, lung)
Major Ops: 5/ RFA: 3 /bronchoscopies: 3
Chemo Rounds (career):127
Current Chemo Cocktail: Xeloda & Erbitux & Irinotecan biweekly
Current Cocktail; Bombay Gin & tonic
Bicycle miles post-dx 10,477
Motto: Live your life like it's going to be a long one, because it just might, and then you'll be glad you did.