Oh... I... I don't think I'd really be able to do that. Umm... see the thing is...

[How could she possibly explain that she's always so hungry that whenever she tries to get someone food, she always ends up eating it herself? Well, explain it, and not come off sounding like a horrible person.]

You wouldn't by any chance happen to have something else you might like or need? Other than food?

[Or being no longer buried neck deep in snow?]