The Second Gansey, [ the Doctor muses, more to himself than anything else. But well well well, this is interesting. Gansey becoming more, his life getting rebuilt by a timeless entity. That's happened time and time again in the Doctor's world. Bad Wolf, the crack in Amy's wall, Clara fracturing herself through time and space. All of those times, Rose, Amy and Clara ended up being...well, Rose, Amy and Clara. But it would only make sense that during one timeless entity of nature, someone would come back as more. ]

Have I explained the concept of regeneration to you yet? It's another part of my weirdo alien powers. With Time Lords, when we die, we don't die. The body changes, the personality changes, but the essence remains the same. Sounds a bit like your predicament.