Stark's Little Stardust

Since it's an AU, we will be seeing it from Tony Stark's daughter's (your) perspective
so the story begins with part 1 showing the younger version (so this scene is from 2012) after that on part 2 we jump off to the scene after Tony's funeral, so here we see Pepper being miserable and Fury comes to comfort his daughter (you) but you tell him to get lost, when everyone leaves, she finds Bruce and she begs him to let her use the timemachine, he hesitates but eventually agrees due to her pleading she does go back, but in the timeline of 2012's timeline, to the point when she was just 6, to the beginning scene of part 1, physically she is in her 6 year self's body, but mentally she is 18, and your only mission is to keep Tony safe, will you be able to protect him this time, or will she have to lose her everything over again?