OH no
I'm so sorry.
I always worry about that when my two run up the stairs too. I've had some close calls with them nearly falling backwards.
I understand.... I bet you're missing her
I would miss my two if they had to stay at the vets overnight. It'll be okay just know that you can get her first thing in the morning and love on her to pieces. Will she have a cast when you pick her up?? How much does she weigh??(just wondering because I think Muffin is about the same size)