What does the little boy call her?
I think he called her "Kelli" on the Wednesday show.
If the child is hers, it's possible AI decided to handle it this way (they have done some dumb stuff this year). It also wouldn't be the first time in history a family treated a surprise from a teenage child as a younger sibling.
Just hypothesing.
Compared to a Paris Hilton type, who has no excuse for disgusting behavior, Kelli seems to be honestly from a background without a lot of options.