Did you even bother to read the caresheet that Walt posted for you?
In that caresheet it will explain that not only are you providing horrible temperature conditions, but that the 105g tank you are using is waaaaaay too big.
An adult BP is generally housed in nothing bigger than a 20g Long tank because they like tight compressed spaces they feel safer and less stress.
Let me guess you house both of your snakes together as well (and I'm assuming thats how she became gravid)? Thats a no-no as well. Solitary animals except for mating purposes.
PS - Snakes can think, but they can't thermoregulate.![]()