That sounds pretty normal, most snakes tend to move around at night and poke their heads out, remember all they really have to do is find food in life and that instinct doesn't change because they are captive kept. I don't know about your area but right now it's a heat wave here and that tends to get my snakes more active. Check to make sure your temps aren't getting too warm. She would adjust fine to a new habitat, no different than if you had just acquired her through a rehoming situation, as long as it's got what she needs she'll settle in.