That is odd, but I confess that I sometimes used to put my daughter into her crib for the night in her shorts or other playclothes if she had fallen asleep in them, rather than wake her up.
I’m sure we all have done that at one time or another, but I would think on a cool night you might take a little more time to dress a baby accordingly. I may end up eating my words but something just doesn’t sound right about this story