Hello & welcome, I am Dr. B, a licensed veterinarian and I would like to help you today. I do apologize that your question was not answered before. Different experts come online at various times; I just came online, read about your situation, and wanted to help.
Again I do apologize that my colleagues could not aid you sooner. If you would still like assistance, can you tell me:
How old is she?
Can she move her back feet voluntarily at all?
If you pinch her back toes, can she feel or react to you doing so?
Are her back legs colder then her front ones?
Any history of heart, brain
, or spinal issues?
Any trauma, slips, or falls?
If you stand her up, does she drag her back legs?