"Huh? If I didn't dress badly, and your family liked me, then why are you--"

...Oh. Oh no, she's such an idiot, of course she wanted to tell them...

"Z-Zuramaru, I didn't...I never meant to make it seem like I wasn't serious about you, of course! You...I mean, you told me that you hadn't said anything to your family yet, s-so I didn't want to surprise them or anything...I tried to just act natural and not give it away, because I thought you wanted to keep it a secret! It wasn't because I'm not happy to be your girlfriend or anything, p-please don't misunderstand!"

Oh shoot, she really dropped the ball here, didn't she...how could she have not picked up on that? The whole family was there, it would've been the perfect place to announce it...

"Why didn't you tell me?! I would've been extra careful if you said you wanted to tell everyone we were a couple!"