
Sounds to me as if she has been doing too much and I would be very careful. Has the vet suggested hydrotherapy yet? If not you should ask as although it will build up her muscles it shouldn't be done too soon.
Don't let her jump on the sofa either, any jumping up or down can harm the bone before it is fully mended and it will not be mended yet there hasn't been enough time. Did you see a specialist for the op? Don't worry about asking all the questions you need to the vet that is what he/she is there for and remember you are paying them.
The operation itself is simple, it is the recovery that the problems seem to occur. I cannot stress enough that you shouldn't allow her to jump on or off anything, no free running and only short lead walks, a few short lead walks a day is better than one long walk.
If you have any doubts about healing as only you will know if she has improved or not, if not then get her seen right away, and if you are not happy with what the vet says, then get a second opinion.
Good luck with her and if you need more info you can pm me.