The wife of Rex Heuermann, the man charged with killing at least three women and burying their bodies on a remote coastal highway, is living in a “waking surreal nightmare,” her attorney said Friday, struggling to pay for cancer treatment while living in a house trashed by investigators. At a news conference on Long Island, attorneys for Heuermann’s estranged wife, Asa Ellerup, and his two adult children complained police left the home in shambles while searching for possible evidence.