Looking at her wiki, it may go beyond the drugs, suicide etc.... I never knew this, but her wiki says she's also got long time mental/insane issues. 20 years ago, she did some crazy thing walking on foot to a random persons house acting like they are best buddies. You dont get that from ecstasy pills.
Mental health issues
On August 19, 2000, Heche drove from Los Angeles to
Cantua Creek in a
Toyota SUV.
[95] Heche, who was wearing a bra and shorts at the time, parked the car and walked 1+1⁄2 miles (2.4 km) before reaching a ranch house.
[95] The house owner Araceli Campiz, who had seen Heche in a movie, recognized her and let her in.
[95] After drinking a significant amount of water, Heche "took off her Nikes and said she needed to take a shower."
[95] Campiz assumed that Heche was not under the influence of alcohol or drugs, but Heche later revealed that she had taken
ecstasy.
[8] After taking a shower, Heche entered the living room, asked for a pair of slippers, and suggested that they should watch a movie.
[95] After half an hour, Campiz contacted the
sheriff's department.
[95] Heche later told the deputies that she was "God, and was going to take everyone back to heaven in a spaceship." She was then taken by ambulance to Fresno's University Medical Center and admitted to the psychiatric unit, but was released within a few hours.
[95]
Heche stated she was "
insane" for the first 31 years of her life, and that this was triggered by being sexually abused by her father during her infancy and childhood.
[96][97] In a series of interviews with
Barbara Walters,
Matt Lauer, and
Larry King to promote
Call Me Crazy in 2001, Heche stated on national television that she created a fantasy world called the "Fourth Dimension" to make herself feel safe, and had an alter ego who was the daughter of God and half-sister of
Jesus Christ named "Celestia", who had contacts with
extraterrestrial life forms.
[94][98] Heche said she recovered from her mental health concerns following the incident in Cantua Creek and had put her
alter ego behind her.
[8]