I am so sorry to hear about that cutie baby
I once had a similar situation and of course it was the weekend. My hubby did some er on my doggie and he wrapped the leg up and added a piece of cardboard. Maybe you want to do that and keep it from adding more pressure to it. Then I'll wait until the morning if you can manage to protect that leg for the meantime and also dont let her run around as much and make sure she gets rest. I am sending you prayers and hoping it's not broken.
Hugs~!