A Florida court must decide who will control the $100 million estate of missing Brazilian-born millionaire Guma Aguiar, lawyers say. The 35-year-old vanished last week after his empty 31-foot fishing boat washed up on a Fort Lauderdale beach with the engines still running, ABC News reported. Since then, Aguiar\'s mother, Ellen, and his wife, Jamie, have engaged in a legal tug of war over who will take control his estate. In a new court document, Jamie Aguiar, 35, accuses her mother-in-law of being incapable to handle the estate. Aguiar\'s mother filed documents saying her son may be alive and in a \"delusional state or be suffering from psychosis.\" Her attorney, Richard Baron, told ABC News that an hour before Aguiar got on his boat his wife told him she wanted a divorce. \"I\'m of the belief that that\'s what pushed him over the deep end,\" Baron said. \"He loved his wife. He did not want a divorce.\" A Broward County court is scheduled to take up the matter of conservatorship Thursday.