My daughter had a tonsillectomy in response to chronic strep with PANDAS. The strep (and PANDAS) came right back. She does have fewer sinus problems though.
How old is your little girl? How long ago did you have the tonsillectomy and was she treated with antibiotics for some time after the surgery?
My daughter is 14. She had her tonsils out @ 3 years ago. After the surgery she was on, I think, 14 days of amoxicillan. But she wasn't checked for strep for easily 6 weeks after surgery...nobody wanted to swab her healing throat, and it was assumed that she would not get anymore strep infections. About 2 months after the surgery, she was in really bad shape, PANDAS-wise and was put back on antibiotics. It took another 3 months or so to finally get prophylactic Abx.
Wow. I continue to be struck by how many wrong assumptions the medical professionals. How long did you use phrophylactic antibiotics?