Wouldn't worry about it
Shes under the care of professionals who have more then like spayed and nuetered animals for a LONG time
Just keep her very quiet when she gets home and she will more then likely not "act normal" because of the drugs in her system - but that wears off.
Make sure she get lots and lots of sleep! DONT take her for a walk for about 14days after that if no infection shows I think shes able to go for short walks - but definately request info from your vet on what would be best for her. I'm just goin gon what was with Crosbie
He was actually the first dog that was ever fixed in our family(we had a line of show dogs before hand lol) So out of about 10 previous dogs hes the first! lol