I think you are referring to the whore/mommy complex Jayce. She is hot and sexy and all until the day she gives birth (it actually starts during pregnancy). "I'm a mommy now! How can I show my little girl how to grow up to be a proper woman if I am acting all slutty and kissing on dad."
I agree with you on the kid knowing we're "doing it". I am certain that she has gradded her iPod at least a few times after realizing, "ewww, mom and dad are at it again."
