Developer for the site here. We definitely talked about this in the post mortem. Do you have any specific changes that you would have made to make the process more clear?
I do remember trying to bump the payment to $10 and not being able to. Adding an option to change the amount paid during checkout or making it much more obvious if there was one may have helped your "haul".
Long story short, the credit card charge went through, the package did not get shipped, and she's in the middle of resolving the situation via email with somebody at CaH, hoping her giftee gets their gift.