Re: ball not acting normal
well as long as the snake is hiding i don't really think its odd.
They will thermoregulate as needed. Your house might be a bit cooler now that it is winter and the snake might just be a little chilly and want to stay on the hot side. This is why you provide and hot and a cool side so the snake can choose between the two.
She might not understand that the humid hide is a hide. You could try directing her into it and see if she starts using it properly then.
Re: ball not acting normal
well when she was going into shed i had the same box in there and i took it out afterwards i was thinking she might want it back now that its so cold so i put it back in i put her in it and she stays for a minute and comes right back out and goes to the same spot. I thought it was normal but i wasn't sure and just wanted to make sure