I definitely considered the whole idea of families left behind wondering whatever happened to their loved ones once they were turned and were never heard from again. I guess Emmett's family would have accepted he was attacked out in those woods and died...and had been eaten or his body dragged into a cave by a wild animal so that's why they never found his body. But I would think it would be hard not to return and check in on family...I knwo the 1st yr would be too dangerous and Carlisle would have convinced them to stay away, but later on, I wonder if Emmett ever considered checking on them. Even Alice wondered about her niece...found out she was still alive. And Rose was super attached to her family so I would think she would want to at least check up on them. And I think her parents would definitely have searched and searched for her. With Esme, I think her family may have just accepted that she committed suicide after losing the baby, although I think they would upset with the hospital for losing her body!
The idea of the houses...I always assumed they just sold them once they were ready to move on. But Edward did mention once that real estate was a good investment, so maybe they kept the houses for that purpose? When they left Forks in NM, they didn't sell the house so maybe that's an indication of what they did with the previous ones as well. Perhaps they just travel back every once in awhile to maintain the homes, or hire caretakers, like they did for the house on Isle Esme.
Thank you Naureen!!