Well, it getting quite messy. You really have to stretch suspension of disbelief here.
Like seriously FMC didn't even once wonder what happened to her body and if the other person is currently in her body and is using it?
@Vikhtoriyan or someone else who knows raws.
Can you spoiler me how long author drags it and how finally it's resolved? Her body is dead or in vegetative state?
Thanks in advance.