Yoooouuuu're taking this whole thing surprisingly well. [Like she knows something Helga doesn't.]

Sure, I'll help you find the end. Who knows what other sweets we'll find that I'll have to fill you in on? You'd get totally lost otherwise.

[Also she would never admit it to anyone, but it's better than dragging her feet around, wondering how she split off from her classmates. Besides, if this lady does know something, then maybe she can use her to find them anyway.]