Yes, it is common for BPs to go off of food this time of year. I would continue to offer food just once a week, or once every two weeks even, until she decides to eat again. Keep an eye on her weight and watch for signs of malnourishment/lethargy. Otherwise don't worry about her starving. If you want, you could try a frozen/thawed rat instead of a live one to see if she's interested.
Hunger strikes are a good chance to make sure your husbandry is 100% spot-on (90ish hot side, 80ish cool/ambient, 60% humidity).
Here are two good articles about BPs and hunger strikes for you to read while you patiently wait out her fast.
Enigmatic Ball Python Appetite
The Psychology of Problem Feeders
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