This story is a sequel to Fanged Feathers

It had been four years since Rainbow Dash became a member of Derpy's coven, and now with her clan out she's left alone. Almost.
Stuck caring for Lyra and Bon-Bon as Derpy takes the coven out with Cheerlie, a new member, Rainbow Dash runs into a Lycan with a darker secret than she first realised.

Starlight Eclipse is a vampiric teenage mare currently at high school in Manehatten, but on her first day she learns that a hunter happens to attend the same school, and that causes trouble, because now her secret must be kept not only for her family, but her life!

(On hiatus until I recover from... something)

Rainbow Dash gets bitten by a rogue Vampony during a trip outside ponyville and quickly learns that, even with some help, life is going to get tougher