- For all the mothers in Lost, see Mothers.
The foster mother of Jacob and his brother murdered their birth mother Claudia just after the twins were born, and raised the twins herself. She was the protector of the Source until shortly before her murder by Jacob's brother.
On the Island
Her presence on the island pre-dates any other individual known so far. Approximately 2000 years ago, she found Claudia, heavily pregnant and shipwrecked on the Island. After Claudia had given birth to Jacob and his twin brother, the woman killed Claudia. Eventually, she would tell Jacob that she had done this because Claudia and the other people who were shipwrecked with her were bad people, and she did not want the infants to be raised by them and therefore become "bad" also.
Jacob and the Man in Black grew up believing that this woman was their mother. She told them that nowhere other than the Island existed, and that her mother had died. She also said that she had "made it" so that Jacob and the Man in Black would not be able to hurt each other. When Jacob and the Man in Black were thirteen, she took them to a cave filled with water and light. She told them that it was "the heart of the island", and that she was its protector; she also said that someday one of them would have to take her place as the protector of the light.
After the Man in Black learned from Claudia's ghost that the woman had lied to him, he decided to leave her and live among Claudia's people. Jacob decided to stay with the woman, but continued to visit his brother. After several decades, the Man in Black and Claudia's people learned about the magnetic energy pockets on the island, and dug wells to learn more about them. In a chamber beneath one of these wells, the Man in Black had started to build a wheel which he hoped to be able to use to leave the island. When the woman learned about his plans, she confronted him and knocked him out. When he regained consciousness, he found that the well had been filled in and all Claudia's people killed.
Meanwhile, the woman took Jacob to the cave of light, and gave him a cup to drink. She said that by doing so, he would take on the responsibility of protecting this place for as long as he can, after which he will have to find his replacement. However, she told him never to enter the cave, and that if he did it would be "worse than dying". With reservations (which arose because he believed the woman favored his brother), Jacob accepted the cup and the responsibility.
The woman returned to the cave where she lived where her belongings and loom were destroyed. As she examined the black playing piece from the Senet game, the Man in Black stabbed her from behind with his dagger. As she died, she said, "Thank you." ("Across the Sea")
After Jacob fought with the Man in Black and threw him into the cave of light (thus transforming him into the smoke monster), he took the woman's body and the Man in Black's body and laid them to rest in the cave, with a pouch containing one black and one white stone from his brother's Senet game. ("Across the Sea")
When telling Kate about Aaron now having a crazy mother, the Man in Black described his own mother as "very disturbed" and responsible for him having issues that he is still trying to work through. ("Recon")
- The character is referred to as "Mother" in the episode recap for "Across the Sea" at ABC.com. . This name is repeated by Carlton Cuse in the Official Lost Podcast (14th May 2010).
- Her nickname on ABC.com's LOST Untangled is "Knotty Mommy Hair", similar to Claires's nickname on the show "Crazy Jungle Hair Claire".
- For fan theories about these unanswered questions, see: Mother/Theories
- What is her name?
- What is her origin?
- Does she really have the powers she claims? And if so, how?
- How did she fill the well and kill all the residents of a village in a short period of time?