Quote Ashley L: Dru is not crazy I can't believe she has to play this insane role. I know it was bad that her daughter Lily got hurt but it was a accident. Dru never met to hurt her daughter on purpose they should of believe her because after this Sheila thing her family knows anything can happen and anything is possible! So when Neil left Dru at the crazy house he went back home and then he was going to go on the elevator and before he could get on he saw Carmen!!! And he yell out her name and the elevator door already close before he could get to her.
~) It may be her sister!!!
Some time ago they brought out in the soap, on air, that she had a sister, but they also brought out the fact that they do not look alike. I can't remember just who was involved in the conversation, but it was mentioned. Edited for Spoiler
Of course an identical twin would have the same DNA. So, if she has a sister they were unaware of, then......... This is what I'm so curious about at the moment and have been for some time. I realized Dru was not seeing ghosts and I have stressed my mind as far as it will stretch and I still don't even have an idea...........