@gertie, just went and read your thread, remembering my own bout with a rehab facility back in 2010 when I had a TKR. I too, live alone, and my surgeon insisted I go to a rehab (he even twisted the arm of my insurance company who initially didn't want to pay for it). I was grateful for the support, but my stay was a bit challenging like yours. Yes, the food was awful. And my first roommate suffered from dementia and wept and moaned all night. When she was finally moved, I was so relieved, though I felt tremendous compassion for her. Luckily, the pain medications were strong enough that I was able to sleep.
I found a great article about bone healing and nutrition on-line. You might find it interesting too.
broken link removed: https://www.betterbones.com/bonefracture/speedhealing.pdf
Good luck with your sweet cat. My little guys also just want to be close to me, but they seem to sense my lap is off limits temporarily. They're quite curious about the walker, though after six weeks having it around, it now merits just a sniff or two.
Best of luck to you, and welcome home! And let me echo everyone's cautions about not overdoing it with PT. My surgeon seems to agree with Josephine that gentle walking is the best therapy, so he never ordered PT for me. Still, I'm pretty sure that it was my over-enthusiastic overdoing of things that may have led to my avulsion fracture, so just be extra careful not to push yourself!