You are David Dash twin sister and when the accident happened in the car was your husband and your son and they died too so both of you search revenge but instead of trying to kill MJ or Katherine, you try to kill Susan and Mike and the best way to do that was to stay with Gabrielle and change your name to Irene and Dave Smith and you want also to kill Carlos so Dave became friends with Carlos but then tricked him and killed him so you were able to comfort Gabrielle Gabrielle thank you