I totally understand how you feel! I was the same way with both my girls. When I picked them up I held them the entire night! I mean the whole time!!! When Rosie went in they told me they would keep her over night. So DH planned a nice night out for me, dinner and a movie. Well they called and said she did great so I could come get her. Dinner and a movie got cancelled. Ha ha. Both of mine did great! They had no problems at all.
My vet gives an injection of pain meds. It made both of them very very sleepy the entire night. Within a few days, they were back to normal! I just bet Luma will do just fine!