Cancel the order.
Go buy it yourself and gift it to her.
Straw purchase and a felony. Don't do it.
Don't people pretty routinely buy guns for their family members as presents? Most boys, for example, get their first gun as a present from their dad, no? Is that an illegal straw purchase? Often, the first such a boy knows about it is on Christmas morning when he's opening his gifts, so he hadn't generally gone through a NICS check for it. I think husbands and wives do the same thing for each other fairly routinely, no?