As long as she is not losing weight, I wouldn't worry. My Dumeril's is an infrequent eater, as well, but is still managing to grow just fine. Continue to offer an appropriately sized prey item every 2 weeks and see how it goes. Also, she may be slowing down feeding for winter. Either way, know that this is a common problem, as Dumeril's are VERY well known to be finicky eaters. I read a breeder's account of a hatchling that took their first meal at 8 months! As long as your temps are good, she has places to hide, and is not losing significant weight, don't worry. 😊