That's good that she doesn't seem stressed. I would still bump up the heat a little.

It's strange that she was sleeping outside of her hide on the warm side. Are you sure it's not too big/small? Are both hides the exact same? What are you using as substrate? I usually keep all mine on paper towels, but my little non-eater always wanted to sleep under them. So, I switched her to shavings to make her more comfortable. I'll probably switch back after a few more steady feedings.

Another thing that was suggest by Dave Perkins, was to thaw out a frozen rat and stick it into a paper sack then into her cage. Leave it there overnight. Some snakes just don't like to be watched. Not recommended with live!

Try and see about getting a scale too. Eyeballing my female you wouldn't know she's a non feeder, she just looks young. But, by weighing her, I know she lost 100 grams through the month of May. That's when it's time to worry.