The mayor of Aransas Pass issued a public apology to the family of Elisa Roberson Monday night, decades after police cast suspicion on her relatives following her disappearance in 1989.Mayor Jason Knight said the city supported and funded a geo-forensic investigation at Elisa's childhood home. The investigation found no new evidence, clearing suspicions Aransas Pass police made years ago that Elisa's family had something to do with her disappear…