Hilda's mouth opens and closes as she feels her brain practically short circuiting. It has nothing to do with his face or appearance this time and everything to do with trying to figure out if he's actually trying to pull a fast one on her or if he's being dense on purpose.

Honestly, knowing him she can't rule either of them out.

Eventually she lands on both being possibilities and archly goes on to point out the obvious. "I'm not looking for a comment about the needlework or the craftsmanship, you dummy! Aren't you going to say anything about how cute they look in their hoods that are basically miniature versions of your hood?" Because he's their adoptive father. Get it?