It is an awful experience having to take out babies to the vet and leave them!
I felt like I had betrayed her. I was so glad when I was able to pick her up. She acted so sleepy and down and out the first day. I felt horrible for her. The next day she was considerably improved and the day after that she acted like nothing had happened!
If you do give her pain medication ask the vet what kind it is. Some give anti-inflammatory meds for pain and they can cause more problems than good sometimes. The stronger pain meds will make you baby sleepy for a longer period of time. That has it's good and bad points also. Usually your little girl will be wanting to sleep off what they gave her at the vet's the first day and will start to get interested in getting back to normal the second day.
I'm glad you have the soft collar for her. I hate to see any dog with those hard plastic things on that strain the poor darlings neck.