Maeby didn't have to go to the vet today!
Her walking was much better by morning, so the vet told me to gradually bring her back up to 15 minutes and if she becomes lame again, then she needs to come in.
I'm so glad she recovered so fast. I guess it was just a sore muscle/leg after all. THANK GOD! She's still limping a little bit, but man this is sooo much better than a few days ago.
Earlier, I thought it was just a coincidence that she started walking better and bearing more weight when I started feeding her raw beef cubes.
After this whole scare, I'm CONVINCED that the raw beef is helping her heal and walk better. Around the time she stopped using her leg (WED?), I had run out of beef so I just fed her ground turkey. By Friday, I was giving it to her again, and by Saturday morning she was walking great. I really do think all those enzymes and proteins that aren't degraded by cooking are really helping her along.