would escapee head for cold/outside?

It's cold here!!! Long story short, company, little boy, unlatched lid, snake gone. She's over 3 1/2 feet, so not a tiny little thing hiding. One of our rooms is not heated at all, we use it for junk, but of course it's the room behind living room where she lives. Knowing they are heat seekers, can I comfortably rule out the cold room/outside for now? I've been tearing the house apart, have flour everywhere and just read about the plastic bags, so that's the next step. I'm more worried about her being cold than being lost. :(

I've had my snakes get out and then just sit on my floor getting cold (my room is like 75). But the chance of it going out side already is low. A Ball Python is going to find somewhere to hide first and won't really venture outside until it's hungry enough and finds a way out.