The interest in Aguiar's electronic communication has been building ever since his cell phone and wallet were found on his washed-up boat.
Ellen Aguiar had the items for a period of time before giving them to her attorney who turned them back over to police, but Jamie Aguiar's legal team has raised questions about the circumstances surrounding her possession of the items.
They alleged that Ellen Aguiar had persuaded police to hand over the phone and "made a few phone calls and possibly deleted critical voice and/or text messages" before returning the phone.
"She's a liar," Ellen Aguiar's attorney Richard Baron told ABCNews.com, referring to Jamie Aguiar.
"Ellen Aguiar never asked for the phone," he said. "She never asked for the wallet. That's complete and utter fantasy."
At a hearing today, a Florida judge appointed Northern Trust with conservatorship over all of Aguiar's trust assets, Florida attorney Thomas Panza was appointed to manage all of Aguiar's non-trust assets, and Ft. Lauderdale Mayor Jack Seiler was appointed conservator over all litigation.
Kaplan's attorney did not respond to request for comment from ABCNews.com.
Additional reporting from ABC News' Candace Smith