You're with the team, taking out another HYDRA base. The fourth one this week. You've certainly had your fill of bullets and bloodthirsty agents chasing you for the rest of the month. Today's target is in a hidden little town in Finland. You've already bombed the base, and now you've got HYDRA agents chasing you through the streets. You're nowhere near the jet, so it's not exactly an ideal situation. You're running alongside your boyfriend, Thor, and trying to fend off attackers simultaneously.

Just as Thor is about to land a hit on another agent, a flying piece of shrapnel knocks Mjolnir out of his hand. He doesn't have time to summon it, seeing as he has around twenty agents closing in on him. He is forced to engage in normal combat. After what feels like an eternity, you've eliminated every agent in the vicinity. The townspeople who witnessed the epic battle emerge from storefronts to clap and thank the team.

Thor accepts their gratitude, and then he extends his hand to retrieve Mjolnir. He waits half a minute, but nothing happens.

"This is most confusing," Thor admits. Just then, a little girl with messy hair and tattered clothes emerges from an alley.

"Unbelievable," Steve mumbles incredulously. The girl, in her tiny, frail arms, carries Mjolnir without stumbling at all. She meets your gaze with the brightest green eyes you've ever seen.

"She is worthy!" Thor announces with a grin. A woman comes running out from a store front and scolds her in Finnish. Immediately, Bucky begins communicating with her.

"She doesn't have a family, or a home for that matter," he reports. Tony gasps from behind the group.

"Can we keep her?!" Thor and Tony ask immediately. Suddenly all eyes are on you.

"Um, I'm not so sure..," you begin, but the team cuts you off with "why?" and "come on Y/N!" You look back down at the little girl. There is no denying that she is special, who else can effortlessly pick up Mjolnir? You're forced to give in.

"I guess," you sigh with a faint smile.

"Yes!" Thor exclaims, picking the little girl up. "You are going to make a fine future princess of Asgard!"

"Wait, that is not what I agreed to!"
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A/N
So, that may or may not have been very good, but I had a bit of inspiration :P