Im so sorry.
((hugs)) It was not your fault, Accidents happen.
We have hard wood floors in our kitchen and on Mother's Day almost 3 years ago my beagle and sheltie were playing in the kitchen and my sheltie jumped up on me all excited, slipped and fell backwards, I heard a thud and when I looked down he was in a dazed state, wasnt focusing on anything and ended up having back to back siezures. We rushed him to the vet, he was fine but now is on perement seizure medicine and about every 6 to 8 months he has a siezure. I am petrified that it will happen again so I panic whenever my dogs are out in the kitchen playing, I chase them back in to the living room.