Your cool side is warm enough if she wants to park there for a few days. She'll eventually get up the courage move over to the warm side and start thermoregulating properly... but as long as she's otherwise healthy, she'll be fine if she chooses to spend a few days at 80-85F.

Did you get her shipped, or locally? Shipped snakes usually take longer to settle in.

Congratulations! I hope she comes out soon--I still get a kick out of watching them cruise in the evenings.