Is it...some sort of weird commentary on his relationship, i.e. - she doesn't want to have sex with him or hang out with him or anything ,she *just* wants stockings?

So. Freakin'. Weird.

Maybe if he buys her some she will become more attractive to other men and she'd start considering her options and leave him?
It's as though it's been translated from, and back into English ten or twelve times.
This one definitely needed one or two more discussions before it was approved.