
Sorry, can't recommend anyone (I'm in the southeast), but my rottie girl had TPLO surgery a couple of years ago now, she was 3 at the time so much younger than your friends dog, but she weighs in at around the same, and we've had no probs with her surgery. Our only issue was that she ruptured the other leg 6 weeks after surgery on the original leg, and recovery time for this one took quite a bit longer as the original leg was not yet back to full strength, and I think 2 big ops in a short space of time just took it out of her a bit.
She was plastered hip to toe, so was able to get around, we bought some rubble sacks that we taped to her leg using electrical tape to keep the plaster dry. Once the stitches were out and the wound was "sealed" we took her to hydrotherapy, starting off on the treadmill, and then progressed to the pool.