Being the last one doesn't mean anything, I have a last of the litter and I think I have the best one. The thing on her elbow looks like a callous forming from laying on hard surfaces, but a vet check can verify. You do know what your getting yourself into right? The energy you see now is going to increase and she will need an outlet. Some become calm happy on the couch dogs, but chances are she'll need more than just a neighborhood walk once a day. My last of the litter requires 3 sessions of flirt pole 10-15 minutes each, a round or two of fetch and some training short training sessions for a little mental work out. Tuke her litter mate just needs a couple rounds of fetch and a little training, so depending on your lifestyle be prepared.
I have a question about the mother, why was she photo'd from the car walking down the road?