One thing I stress with new snakes in reducing stress
I always recommend letting a newly acquired snake have a week to settle in. No handling or feeding. Also suggest to cover the sides of the habitat for a week or so.
Your temps are fine. She will self regulate her temps as needed.
As for not drinking, I can't recall ever actually seeing one of my snakes randomly drinking. Every time I clean and change the water I put the snake's head next to the water bowl and they usually drink like they haven't drank in years. BUT I know they are drinking on their own so I wouldn't worry about it.
I think you're good to go. Just keep in mind that the more YOU stress over the snake, the more YOU stress the snake out !!
NO WORRIES and enjoy your new pet .....
Oh, I suggest getting probed thermometers to monitor AIR temps. IR thermometer can only tell you the temp of an object. Not the air temp contacting that object (snake for instance).