Found a secret entrance to the tomb and 2 companion fled on always (Divinity: Original Sin 2)

1. found a cave,near which the Troll in the cave of the altar,which asks of blood (threw him against the rain and the stake) what to do with it then?
2. found a secret entrance to the tomb and 2 satellites (except mercenary) ran forever...it always will be or they will be back?