Hi - Izzy was spayed and it went well - we go to a very progressive vet who did lazer on her (less recovery time needed) and she came through with flying colors. My vet also kept her overnight which was nice. Picked her up mid-afternoon the next day and she was a little quiet and I watched her all day so she wouldn't jump around. Well the next day she was back to her old crazy self...I don't know....but she's still the same weight (didn't gain though I wish she would have since she is so tiny) and still a crazy woman.
Your little girl will be fine - just watch her the first day when she gets home.