Also interested in how your girl is doing. I have a similar case, a mini mule, that, as a long yearling, broke her femur right at the stifle end growth plate. It was misdiagnosed as a major tendon/ligament issue - she already had moderately severe locking stifle issues, and the initial xray didn't cover where the break was. After five months with no real progress - I know tendon issues can take a long time to resolve - I got a second opinion. Long story short, she immediately had surgery (late Feb 2016, included a human grade plate and four screws) and is now just past the six month mark. The break is healed, but due to the delay, she had both bony growth and resorption in the patella and parts of the femur head, causing significant arthritis in that joint.
Now, she walks/trots/runs on it as well as she is ever going to - there's some mechanical lameness due to the damage - but she still won't put full weight on it, standing, without pain (it's a bit of a fight to clean the good rear hoof). She's on a full horse dose of Adequan, every two weeks, which seems overkill to me, and something I'm going to ask about in a different post.
I hope your little girl makes a full recovery!
