Michelle Crane

Michelle Crane, also called The Woman in White, was the secondary antagonist of Insidious Chapter 2 and she was the mother of Parker Crane AKA "The Bride In Black".

Insidious: Chapter 2
On a couple of occasions she terrorizes Renai and her baby when they are home alone, to finally attacks Renai and knocking her unconscious in the living room. She first appears to Dalton during one of his astral projections when she lurks in his room and the former warns his grandmother of a presence behind her.

When Carl summons Elise using his dices to communicate with her, she viciously fools him and the rest of the group, in pretending to be the deceased psychic and drives them into a trap when her clues, first lead them to the hospital Lorraine used to work at and treat her son as a patient, then to what used to be her and her son's home. There she reveals her true identity through the dices, calling herself 'Mater Mortis' (Mother of Death) and attempts to kill Carl and Lorraine by dropping a chandelier from the ceiling onto them.

During Specs and Tucker's inspection of Parker Crane's childhood's room as well as Josh's wander into the Further, it is revealed that she was purely insane and violent toward her son as she forced the young Parker into assuming the identity of a girl, and insisted that his name was Marylin. In a re-enacting of one of Parker's memories of her, she is seen to slap him really hard accross the face as he fails to remember this when signing a drawing he made for his her with his real name. Through messing up her son's identity and mentally breaking him down, she managed to force him into a lifetime of serial killing of mostly women (as it appears when the ghosts of his victims are unveiled).

At the end of the movie, as she tries to kill Josh, she and the memories Parker has of her are defeated when Elise repeatedly pounds her with a rocking horse.

Personality and Traits
An elegant woman dressed in a long white gown haunts Lorraine's house. It is the stern and violent ghost of Parker Crane's mother, who spent a lifetime abusing her son since his childhood, unhappy that nature provided her with a son rather than a daughter, and responsible for triggering his killing spree. She pressures Parker, now possessing Josh's body, to kill the Lamberts, convincing him that it is the only way for him to prevent his host's body from decaying.

Trivia

 * It's currently unknown how she died when she was human. It's predicted that Parker must have killed her for the way she abused him all those years when he was a kid; because of how Josh finds her covered up in the room with the 15 standing bodies