davesbgrdtruck - I wouldn't be too worried. When I had my gallbladder out last year, it took about 2-3 months to get my cycle back to normal. She did have major surgery (even if they call it minor). There are so many things that are affected after the surgery such as digestion and (sorry if TMI) but bowel movements. While her body adjusts to these changes, she will experience irregularity with her cycle. My doc told me to go ahead and count the spotting as a period because it was usually consistent and lasted longer than a day or two. Any other questions about the gallbladder stuff feel free to IM me. Been there and done that so I have first hand experience.
If this spotting problem has been occuring since her surgery, I recommend going to the Dr. that performed her surgery!
Surely she must have been scheduled for a follow up post-operative appointment? I would be concerned at this point and definitely think she needs medical attention to get to the bottom of why this happening!?
Has she had pain with the spotting?