Because to c visions in that era meant 당신 were either posessed, a witch 또는 crazy.so her so called family "died" her ass, the 일 she was committed to the insano assylum.
She had premenitions. Her family made everyone she knew believe she had died and left her there. She was turned into a vampire there 의해 someone else in the mad house to protect her from a vampire hunting her.