I am alive! as are the cats.
my new dual thermometer is tracking the bottom level bathroom (pipes closest to the outside wall) and it got down to 48 last night inside. I went down and turned the space heater on again around 5 AM and it's currently 53 down there. my own suite is a roasty toasty 65 - almost 66!
if nothing else I can rethink keeping the heat on 68 at night. a few extra degrees isn't making much of a difference. the rest of the house is nippy though.
btw, the cats mostly kept to their own routine last night until around 5 AM. the one is always a fur collar anyway at night, the other one sleeps in the spare bedroom. I threw a pile of laundry on the spare bed and she was all snuggled up just fine. however it must have really gotten colder b/c by 5 AM they were jostling for position on my head.
correction - it's now nearly 68 in here. the sun is coming up.