I am very concerned she will use the oven or stovetop for heat. While it can be done and has been done, it is flirting with disaster. While I would advise her not to do it, I cannot state strongly enough that she keep the camper well vented.
Use extra blankets at night, with no oven or stovetop for heat. If she ignores this, at the very least open the window by her head at least one inch to insure she has oxygen.
During the day, especially in the morning, using the oven or stovetop for heat to knock the chill off is not as risky. THIS IS WITH PLENTY OF VENTILATION.
I don't like to shout the sky is falling, but using the oven or stovetop for heat is probably the most dangerous thing you can do in a TC. The lack of oxygen and/or carbon monoxide are silent killers.
Wayne
