First of all, I wanted to thank everyone for their kind thoughts and well-wishes for Sasha.

So far, she is doing very well. She is very patiently staying in her crate all day (except potty breaks). One week down and 5 to 7 more to go! Her leg seems to be healing well and she will have the staples out on Wednesday.
The biopsy results came back "inconclusive". The vet says that the discoloration of the CCL and the meniscus was due to a physical injury and is not cancer or degenerative disease (yay!). However, the actual reason for the discoloration was not clear. So, I suppose this means we shouldn't worry. If they come back with any more conclusive information, I'll post it.
Thanks again everyone!
Jessica and Sasha