After graduation 17 year old Hermione Granger was called as a slayer, instead of going to the Hellmouth as she was instructed she choose to help Harry fight Voldemort. The PTB tricked her and sent her to the Oracles to erase her memory and implant her false ones. That day 15 year old Buffy Summers died in an accident, all her memories were transferred to Hermione, the next day when Merrick visited her she became Buffy Summers the vampire slayer.
Buffy remembering her past after she was resurrected by Willow.
The magical community believing Herm...