“Alright sweetie, I’ll see you later.” You kiss your daughter on the forehead and you leave for your mission,

Your daughter nods and goes to ask everyone if they can play with her since you were gone.

She asked Thor but he was going back to Asgard, she asked Natasha but her and Clint were busy training, she asked Bucky but he was too busy with sam, Tony and Bruce were locked in their lab, she asked Steve but he was taking a girl out to lunch…

So she had no one

For anyone this wouldn’t matter they would find something else to do… but for her six year old brain she felt neglected and she started to play alone as some sort of protest.