"You missed a spot, a couple inches above your neck. Do you want me to get a handheld mirror so you can see the back yourself?" In case he's forgotten that trick what with not having been able to look in a mirror without it shattering, she adds on second thought, "That way you can look at the reflection of your reflection. It's useful when you're trying to do your own hair."

Helpful answer, but still not going for her gloves.