Yet another urgent feeding post...

[EasternBlackNeckedGarter]

Hi all, my name is Daniel. I realize that there are hundreds of other food-related posts on here but I figured I might as well post. My adult female Eastern black neck hasn't eaten for a couple months, possibly longer. Unfortunately I didn't record the exact date of her last meal – the last RECORDED date is December 15th. Anyways, she's had eating problems in the past, especially during brumation, but I don't think she's brumating at the moment. Certainly seems active enough. In the past, her diet consisted of small mice, but I switched her over to pinkies due to the fur. Whenever she won't eat mice, I try minnows. (Yes, I'm aware of thaiminase and parasites.) Of course, she's refusing them as well now, which is why I'm posting. She lives in a 20 gallon terrarium with aspen bedding, two hides, a soaking-size water dish, a branch for basking, a fake fern, and two pieces of juniper wood. Her heat source is an overhead heat lamp which turns off at night, and I recently added a UV fixture, in case that would help her appetite. Any suggestions or comments? It's probably nothing, but it's been long enough since she ate that I'm getting worried.