Flames Through Space

Nightflame has been contacted by Starfleet, a group from another demention that she hasn't spoken to in many many years.
Someone managed to slip the news to the Federation that Nightflame had gone toe to toe with the whole Q continuum and survived with her immortality and unscathed, she and her partner, Darkportal, are assigned to the Enterprise-D that is captained by Jean Luc Picard.
Their mission is to protect the starship from one Q continuum member in particular from killing or putting anyone else in danger on the ship and do their best to stay undercover as long as possible.