Maria,
Hi there. Positive thoughts heading your way for a speedy recovery for Sasha. Roxee just had her stitches removed and she did great. After the third day, she was very hard to keep calm. She did fine, though.
Roxee did got to the wee wee pad more often. She would just sprinkle a drop or two the second time to the pad. I agree with you that I believe it is like weak muscles or something. Maybe someone else has more insight on this topic??? If you are really worried, you could make a call to your vet to ask.
Keep us posted on her recovery! Again, hope that all goes well....
Thea and Roxee