Abigail Foster

Abigail Foster was an evil witch who lived in San Francisco over four centuries ago with her brother, Gregor. She cast a powerful curse on the members of The Order as punishment for witnessing her death and not trying to stop it. After the Halliwells intervened, Abigail was able to come face-to-face with her brother who apologized for his role in her death. She forgave him and found peace, taking him and all those were meant to die centuries ago with her.

History
Abigail is the sister of Gregor Foster, who in an unknown year joined The Order of The Cross, and became a Monk.

Death and Curse
In her later life, she resided in a village where women were being accused of witchcraft. When she became one of the accused, she fled to her brothers Monastery looking for refuge. They broke their rule of not permitting women inside and provided refuge to her, as they believed that she was a good woman. However, one day, as supplies were running low and the Monks were getting antsy, one witnessed her praying. They believed she was practicing dark magic, and alerted the townsmen.

They handed her over to them, and the townsmen decided to take action that very moment. So, they mounted a stake and drug her to it despite her cries for them to stop. She pleaded with her brother or anyone to help her, but no one did. Everyone watched as she was burned alive at the stake. Moments before her death, she swore vengeance and cursed everyone to die at her hand every year. Part of her curse was to ensure that everyone who was part of her death remained alive to witness her reign of terror.

Personality
Abigail was once described as a good woman, who wanted to live her life in a small village. However, she was betrayed by her brother and those she once called her friends, which caused her to turn dark and malevolent. So much so, that she cursed everyone to die at her hand - and stay alive until she could get to them. She now kills without mercy and regret, sparing no one no matter how remorseful they might be.