Hey, sorry I somehow missed this thread til now, thanks @tttaylorrr for bringing it to my attention (as well as for the compliment)
Anyway, @Deborah is much more experienced and knowledgeable than I am, but here's what I would do...
I would switch her to a smaller enclosure and start from scratch, as if you just brought her home and she hasn't eaten yet for you.
No handling during this time until she's back to eating consistently.
Also, I wouldn't offer more often than every 5 days to start. Offering too often can further stress the snake and be counter productive, causing more refusals.
I would also stop trying to dig her out if she's burrowed prior to feeding. Simply open her enclosure and offer. She'll be able to smell the prey. Most hognose won't eat off tongs that young either, so I would just dangle and wiggle a little to spread the aroma and leave the prey. She'll smell it and find it when she feels it's safe to come out.
As for the huge weight gain, there's no way. Pinkies only weigh 2-3 grams and are primarily water since the mouse hasn't developed yet. So her intake hasn't been close to that. Hognose have a very fast metabolism too, so A decent amount of the intake is processed and "disposed of". So there was an error there somewhere.
Hope I helped out here. Good luck. Hopefully Deb will see this soon and correct me if I was wrong anywhere in my advice or reaffirm what I said and help you further.