Golly Anna, I can understand why you are concerned! I would say that aslong as she doesn't get TOO rambunctious she should be ok. Just keep a close eye on them. I know she wouldn't leave a bandage on it, Keegan wouldn't either. After Keegan got spayed and when she got sick, she stunk so bad, I had to give her a bath, I covered the incision with a tagaderm from work, but b/c her hair was growing back it didn't stick very well and she wouldn't leave it alone.
It has been over a week since she was spayed hasn't it? They took Keegan's stitches out in 10 days. I would keep a close eye on it like I said and maybe even some Neosporin, tho she probably won't leave it on long, but its the thought that counts!! Since it supposedly speeds up healing.
Good luck and keep us posted!