I would look at it from a different direction - do you want your daughter to feel obligated to accept male attentions because it's what *they* want? I'm sure the boy's intention was sweet, but by adult standards it's inappropriate to give a gift to a woman you don't have a relationship with.
It sounds to me as though your daughter is handling it beautifully. I would be wary ot setting her up to be susceptible to emotional blackmail. The boys' feelings are not her problem. She is obligated to be polite and respectful, period.
I agree completely with this as well. JaneSmith makes a VERY good point about where your daughters obligations should lie.
