No shore power? No furnace? Maybe a buddy type heater would work but even with that she's probably going to burn a lot of propane. We had a Buddy for a minute but found that even with plenty of window venting it would mess up our sinus. I haven't used a Wave heater but some do say they are better. There is also a Cat platinum company which vents through pvc pipe and is very efficient but it uses 12 volts and may be hard to obtain. They were around $700 iirc. I wont sleep with an unvented heater but to each his own on that point.
Some of the older TC furnaces didn't need 12 volt power but a few years ago I looked for a new one like that and couldn't find any that didn't need 12 volts. She can operate dry and use a bucket for the toilet and a 5 gallon jug on the counter top for water supply. One way or the other I'd still want as much solar on the roof as possible for lights, computer, cell etc and possibly for furnace power.
