Hi Jimking, Just a few thoughts about the bed issue. I know how hard it is for your wife to sleep.
Those hot spots can be a concern if you sink too deeply into the mattress. However the tempeur pedic, has a firm one, in which you to not do that, but you still get the support. They cost a bunch. Also there are now sheets made by special companies that have products, both blankets and sheets, that distribute heat, or vent it, instead of getting over heated. I can dig around for information on those if you want me too. I sure hope she can find what she needs for comfort of sleep. ginnie