You're welcome. have fun bashing heads in :D @ xBASSxMONSTAx
You should be able to. After you get the doctor from the wilkersons and save him in the cemetery afterwards, just do a couple side missions or so. You should be able to come home to see Jacob and Lily arguing about finding a bigger house, which should trigger the quest. I think you have to have more than 12 ppl too, not really sure. Try doing the army missions in town too, maybe its connected. :D
i usually get the quest after doing said things above.