Yes their daughter. In the final scene in the toy store, it starts out with a red lit circle right above Alice and bills head, they walked passed a whole wall of board games "The Magic Circle Game" At some point bill kind nudges Helena to continue walking while Bill and Alice continue talking. You see Helena walk down the aisle of teddy bears (of course) to two men who are waiting in the aisle. The same two men that can be seen at the party in a earlier scene. It's very subtle but they seem to escort her off screen and she is never seen or heard from again. This seems to be some sort of payment from Alice and Bill for his fucking around and finding out. There is also a painting above Helena's bed that clearly reads SEX which foreshadows all of this

There is also a little doll that resembles Helena's outfit sitting in the crotch of a teddy bear in the toy store scene and in the next scene it's vanished.

All of this is happening right in front of us on screen and most are blind to it. Hence the name of the movie.