Eventually, the team was able to restore her memory, but in so doing, they. So, she never actually became a higher power Jasmine started possessing her after 'spin the bottle, but i personally headcanon she started influencing cordy after 'birthday', because that's (roughly) when cordelia’s characterization starts to get wonky.
Buffy Season & Angel Season 4 - MAJOR SPOILERS INSIDE : ANGEL
This arc was an assault on cordelia's bodily autonomy, as she had no control over her circumstances
Even when the high power birthed itself into being, later named jasmine, cordelia was effectively discarded
Though this protected cordelia's legacy by making it clear she was not actually evil, it destroyed her character nonetheless. The botched spell only gave jasmine access to cordelia's old memories so she could play the part of being cordelia Jasmine couldn't really grow in power until after the thing with connor, and the inner jasmine grew until it broke free with help of the blood sacrifice. After a spell gone awry caused her to revert to her teenage self, cordelia's memories were finally restored through a spell by lorne, [45] but the spell awoke the fallen power too.
At what point was cordelia replaced by jasmine Skip appeared to be facilitating the process, so was cordelia ever demonized by skip If so, what was the reason of that