I'm usually a sucker and would probably send a gift. But lately I'm realizing I spend ALOT of money on gifts - every time I turn around it's someone elses birthday, anniversary, graduation or whatever! And that's close friends and family!
I say if you don't want to begin a habit of giving gifts to your every one of your child's friends whether or not she attends their party, I would mail a card with with some fun stickers or maybe mail one of those musical cards and that would be it. If this was a close friend then the gift card would be nice.
It's a tough call - I know, but sometimes I think if we didi't have to give gifts to everyone for eveything (and we don't get any either) I would have alot of extra money to spend on things myr family really needs or wants. With all the money we spend on XMAS gifts me, DH and DS can take a nice trip to Disney! And a trip to Disney beats any potholder or frame or "I would never wear that" gift I may get.
Oh well...