[The way he responds, she starts to think he's moving towards that refusal--but then, to her surprise, he instead immediately follows it up by agreeing.

Oh. Oh!! Ohhhh! She brightens immediately like the sun peeking through parting crowds, relief and joy in equal parts in her expression.]

Yay, yay, yaaay! I'm so glad! Do you need to find an outfit? Oh, but I guess you probably don't need my help since you were the one who helped me, ha ha!