Geez, I just got back from the emergency vet. Piper scared me out of my wits.

I was feeding her and she spit out the bottle, and a little came out her nose. It sounded like she was choking a little but that might have been my imagination. I burped her and listened to her lungs to see if I could tell if there was fluid in them. Then she just sort of went limp in my hands and I FREAKED out. I literally screamed, threw the bottle, and took both her and Sebastian to the emergency vet as fast as I could. I was sobbing the whole way there because I knew that she was dead or would be soon. When I got there and we took the sheet off that I had covering the crate, little Piper was just fine. She was crawling around looking for the rest of her meal. Turns out she had just fallen asleep in my hands and I panicked

The vet told me that I didn't do anything wrong and sometimes it just happens that they aspirate.