Overthemoongran
I think your SiL is lucky that you’ve done as much as you have. I had both knees replaced, eleven months apart. I wasn’t allowed home until I could prove I could manage stairs ( I do have a downstairs toilet, but that was still the rule). I didn’t need help with the exercises, you just do them yourself , and I certainly didn’t want or need help washing or with other personal care. Before both ops I cooked lots of meals and froze them, but if she hasn’t been so organised then online supermarket deliveries could be arranged for ready meals. It sounds as if she is taking you for granted, you have your own life to lead, say “ no more”.
I've had both done as well, I was able to do everything except drive and walk dogs when I arrived home. I'd frozen meals in advance, could wash my hair in kitchen sink, was easily able to toilet and just got on with it.
Sil, in this case, is asking way too much of OP. Just say "no thank you".
