I take it that she never let her kids be around any Hollywood types (Roman Polanski for one).
With all of the attention focused on Roman Polanski, no one every asks who the Hollywood figures were who provided a young Drew Barrymoore and the Coreys (Haim and Feldman) with cocaine and took Drew’s virginity.
These kids went to adult Hollywood parties.
Lots of used up souls left for the gutter in Hollywood. The movers and shakers always know there is new blood coming to town to try a stake in the game.