Best I can come up with is either Dariana (already taken by a reasonably famous snek lady) or Darlynn (extra cheesy, reminiscent of a adult-star alias). I humbly request aid and advice from my fellow, ever-gracious Furs 🙏
(art is by Blazera, lightly edited from a comm I bought last year)
Got a spinning wheel when posting that comment. This is a test to see how long that lasts. (update: forever, but it posts instantly)
To make sure that this comment isn’t useless: You could always do a diminutive of Darren (i.e. Darrie, Dara*, Darrey, etc.)
*Dara, while fitting the whole feminization thing, is actually a male name from Irish and as such is used as a masculine name in the British Isles, although most cases elsewhere are as a female name