[quote=Nimda]
Why search the mind instead of external data?
[/quote]

We have searched both. The mind because if we can find out how they are held together, we can easily work out a way to separate them. The latter for obvious reasons.
[quote=Extra]
It's fine...*there is a spark emitting from my necklace and my mood becomes normal*Also, my father would've been a great help. Since he is just a secondary personality that was brought to life.
[/quote]

We are all reincarnations like your father is, and we can all speak through this mind. Although I do not believe your father or any of his reincarnations would even be able to have this predicament, unless they all share a collective mind.