He'd been set to leave, more than ready to simply head back and tune out Fury's shouting when the sudden sound made him stop. He watched Natasha and the young girl quietly, his expression blank even when she introduced them, not finding the situation as amusing as she did. Especially not with the name. He forced himself to bite back anything he could say to Natasha however, decidedly ignoring her was for the best.
Instead he knelt down by the little girl, offering her a smile as he pulled her into a tight hug. "Hello Astrid, darling.", he murmured softly.