The Avengers Daughter {On Hold/Undergoing Edit}

*2043- 15 years before Loki attacks New York*
Pepper Pots just broke up with Tony and he is a wreck. He is constantly drinking, sleeping and he is really depressed. He walks home one day, thinking about suicide when he passes an orphanage. He goes in and sees a sad 13-year-old sitting in the corner all alone.
Tony decides to do the right thing and take the little girl home. He soon falls in love with her, just as if she is his own daughter. They become inseparable until the day she was working in the S.H.E.I.L.D. headquarters and Loki attacks. Maddy Stark falls in love with one of the Avengers while holding back a major secret that will affect everyone. Will she tell them? Or will she let her true father tell them?

P.S. Sorry. This story is going way out of order but I didn't know how else to put it.
P.P.S. AOU Spoilers!!! I wouldn't recommend reading without watching the movie first.
P.P.P.S There will be mentions about shipping Stony. So sorry if you don't ship it.