Afterlife?

This is the married Jegulus Beetlejuice AU that no one asked for. Once James and Regulus overcame the dark lord together they aimed for a normal life. What happens once they realize they have died and are stuck in the house that they just purchased? On top of that how are they going to get the new people who just moved into their house just a couple months after their deaths out? Including a gender bent Harry as Lydia and some minor plot changes this is a Beetlejuice AU. How is the newly wed, and newly dead couple going to learn to adjust to their new circumstances?