Phil,
That sounds promising for a start.
Your mother sounds like an independent enough soul that she will heal as fast as possible.
An orthopaedic surgeon friend of mine once said that his profession had more in common with carpentry, than it did with medicine. I can see how that would apply in this case.
I know that healing and physical therapy are the reasons for the stay in the nursing home, but please, please, keep them on their toes. All nursing homes are not created equal, and all nurses aides are not either. These days, though, sometimes you receive better care in a nursing home than you do in a hospital. In my late wife's case, however, there were times when the attending physician ordered things that were beyond the knowledge of the nursing home staff, and I had to actually instruct them on some procedures, or have the physician do so, if they did not trust me, being a layman. That's the sort of thing I'm trying to warn you about. When a patient is elderly or, as in my wife's case, confused, it is tempting sometimes to them, to not follow procedures properly. You have nurses in your family, I believe, so rely upon their advice.
There have been discussions in medical fields about doing complete femur replacement in patients requiring both hip and knee replacements. I think your mother's case is good evidence for advocating this.
Best wishes to all of you, and prayers for a continued good recovery for your mother.
--Tom