Is shoe-tying a kink?

Long but tolerable day of work, returning home near midnight. Here's an oddity: I was helping an attractive woman in her twenties - in shape, nice chest, tribal tats, etc - when she says "Your shoe is untied". She then *knelt down* to tie it for me. I demurred, & she blushed and apologized. Weird. Hot, in a sub sorta way, but weird.