Ahh, thank you for the wonderful and well thought out comment! Really glad you enjoyed your experience with the game (and want us to make more!)
**** (Spoiler below....) ****
****************************
As for energy level with the ghosts- that has a bit to do with age as well as the connection to the manor. Hera wasn't around the place as long as Dei was, so he had a lot more pent up emotions about the place.