[ She tries hard to hide her disappointment- for just a moment, she'd hoped to get something back. ]

Oh- I see. ... If it's not too much trouble, I appreciate the offer a lot. Would it be too much to ask to get it tonight? I do understand if it's not a good time.

[ And she does, really. The gratitude is sincere, for all her attitude towards others- even without the knowledge that being polite can get you what you want. But the sooner she can get to something more familiar, and with a guarantee of warmth against the harsh winter, the better. ]