Your Nothing but a monster

Millie Allen is Barry Allens Little Sister. Just Like him She is a speedster only with Purple lighting. She was called the comet.
Two years after being a Super Hero & having a Hot chocolate named after her she mets a man called jay Garrick from another earth ( Aka earth two). They of corse fall in love before He tragiclly dies and comes back as zoom. Millie gets taken ahostage after Barry and herself surrender their speed for wallys life. Will she liveunder Zoom/Hunter/Jays Darkside or will she try to pull at least half of him into the light?
May Have mature parts but I will warn you so Don't read the chapters that have the smutty stuff in it if you dont like that stuff.