Hatsune Miku - Lynne (リンネ)
That's what it says on her tongue. It says "ah." She took her doctor literally, apparently?
The title comes from "rinne," the cycle of reincarnation. But it is used in a punny way here. (And Ghost Trick agrees with me.)
Original video: https://www.youtube.com/watch?v=EahYs-8tTjQ