Iron Legacy! ~Infinity Heroes Book One~

Kelly Ann was born six years prior to the events at the beginning of Iron Man 1. Three years prior, she is put into father, Tony's, custody after her mother dies of a sickness unknown to even modern technology. Growing up while being the daughter of a hero, isn't easy and watching the events of her father almost getting killed multiple times, she's not sure she wants to be a hero. She becomes friends with the adopted kid of Captain America, a orphan boy by the name of Daniel who was kidnapped at birth and infused with the Super Soldier serum, and then rescued by Shield a few years later. The two grow up watching all the events unfold before their very eyes.