Daughter of Coul- A Bucky Fic

Margaret 'Maggie' Coulson started to live with Avengers after her dad, Phil Coulson died before the Attack on New York. Tony and Nick Fury both agreed that the best place for Maggie and her mom, Audrey, was Avenger Tower. 5 years later, Maggie still lives at Avengers Tower and feels like she's family. Bucky is her closest friend but what happens when they discover that they may be more than friends? How will Tony and Clint react?
Aside from her very confusing relationship with Bucky, Maggie starts a new job as a medical assistant for the team. Her only rule: no fieldwork. Tony and Steve make her compromise and she will only be put in the field but only if it is absolutely necessary. When a team's mission from an outside party goes south, the Avengers have to step in to save everyone from a place called Afterlife.