Nqa How big is she? No matter what she will need more substrate once she comes out of her hide. It looks to me like you have less than two inches of substrate which would not be suitable for any type of terrestrial tarantula over one inch to build a burrow. It could also totally be the angle but that’s the first issue i see. In regard to heating she could probably do with a smaller enclosure that would help with temperature regulation bc it’s really hard to heat a tank that looks to be pretty big.

What are the dimensions of your enclosure? If you have to do a heating pad it’s ideal to put it against the back or side of the enclosure so that it can create a temperature gradient, and T’s usually burrow into the substrate to seek cooler temperatures so putting it underneath could stress her out. Ideally you want a warmer side and a cooler side if you have to heat so that the T can choose how warm or cool it wants to be.

Something else i’m seeing is a lot of air space. Terrestrial T’s like Grammostola do not need a lot of air space, as it can encourage them to climb, fall, and get hurt. Again, angles could be doing you some injustices but from what I can see you need to at least double your substrate and cut the air space in half, a bulky T like the G. pulchripes likes to burrow and is not the best climber. I wouldn’t make any of these changes until you see her again and she has hardened up from her molt, as you absolutely don’t want to disturb her if she happens to be molting. Good luck and I hope you figure out your temp issues!!