Corn Troubles

[Crowfingers]

Sorry, late to the party here.
Get a good length and weight on her if you can, and some top down pictures. Corns are not hefty snakes. She may be thin, but a few better pictures and a weight would help.
As mentioned, escape proof is must. If they can get their head in, they will either escape or get stuck. They will easily and happily push off a screen top that is not well clipped down.
There a few experienced corn keepers on here, and you have already gotten some good advice.
Keep us in the loop and ask anything you need/want to know. We want the best for your new addition.

Hey, thanks! Yeah, I think she needs maybe 50-100 g before she looks filled out. I can clearly see and feel her spine, and there is an indent caudally about at the midline of her body. She's definitely not emaciated like some petco balls that I've seen. I'll try and get good pics once she settles in. She is ~5.3ft and is 830 g (0.83 kg). I ordered f/t mice tonight, all the stores around me had were pinks or fuzzies or jumbo rats. If she does not take that I'll go to live. She is very scarred up, so I assume shes only ever had live.
I got 2 extra clamps for the screen so that there are now one on each side and replaced the red "basking light" with a CHE on a thermostat. Tonight might well be the first dark night she's ever had for all I know.
She has been exploring all her new hides and climbing all over the cage. She seems fascinated with the moist moss hide. keeps sticking her head in it but trying not to let her belly drag through it, I don't think she's had one of those either. Also, the stuck shed on her tail came off and there is nothing wound related underneath so that's a plus.

She is surprisingly handle-able as well. Let me pull back her gums and look in her mouth, I can touch her head and pick her up without so much as a flinch. At least the kid must have done something with her at one point.