First time ball python owner needing help.?

2 weeks ago I bought a juvenile ball python. The guy at the shop set me up with a 10 gallon tank, substrate, an under tank heat pad, a water bowl, some frozen mice and a somewhat large hide. She has eaten two mice since I got her.

We just returned from a 3 day Trip and she is looking rough. She is wrinkly and flaky and skinny. It appeared as though she was beginning to shed the day we left as we could see some old skin beginning to come off and she was actively rubbing her nose on surfaces.

The hide is set up directly on top of where the heat pad is located. I recently added another hide to the cool side, but she has not used it yet.

I am concerned with keeping her healthy. I just ordered a 75 watt ir heat lamp, a spray bottle for misting, and a hygrometer/thermometer. I’m not sure if it is warm enough the sticky thermometer I got at the pet store stays between 70-80 but is high up on the glass near the wire mesh.

What should I do in the next couple of days and beyond to ensure she bounces back and stays in good condition? Like I said, I’m a newbie here and appreciate any advice no matter how basic.