she might just be stressed from the move. you should also ask the pet shop the last time she ate. Some people say its best to start with pinky rats or day old chicks, I'll try defrost pinky rats.
Also I would use a themometer to check the temp. of the vivarium to make sure it's conducive.
For the one that lays by the lamp all day,stay the because of the heat. I have two jungles and i use heat mats and lamps for them because they are active only at night so with the lamp on 24/7, the snake will just lay there all the time. Just to check this at night turn of the lights in the room and the heat lamp for awhile and observe what happens, and leave the hide in there. How many snakes do you own ?