Not to rub it in or state something you don't already know, but there are lots of nice places down here where one could comfortably rehab with personal inhouse/daily visits from nurses, therapists, docs, housekeeper, etc. as needed.
I personally know of expats who have brought their aging parent(s) down here for the personal, relatively inexpensive, attention that can be had. It has seemed to work well for them.
It sounds like you are very much on top of things up there (except for the cold!) as expected! jajaja.
Hoping for the best possible outcome for you guys...
A little side-story about a physical therapy experience... Years ago with a wife long gone, she had a knee replacement done. After the surgery she went to a rehab/recovery center in a semi-private room. Her roommate was a 92 year old woman who was recovering from some sort of surgery. Every morning my middle-aged wife would just groan in bed and refuse to get up to do whatever therapeutic procedures were scheduled. That 92 year old woman would spring out of bed (as much as a 92 year old in rehab can) and go do her physical therapy procedures with gusto. She was determined she was going to get past her recovery phase and go on about her vibrant life for whatever time she had left. They had to bring in an automatic leg exerciser to put under my long gone wife's knee just to keep it limber and healing properly. That 92 year old's attitude is the successful one! ;-)
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Sam