It has also been revealed that Sheffield United have opened an investigation into the death of their former vice-captain.
"Maddy was a happy-go-lucky, carefree girl with everything to live for and by last Christmas could be described as being at her happiest. This all changed gradually from February this year," read the statement.
"It is no secret, nor should it be, that Sheffield United Football Club have agreed at the request of Maddy’s family to carry out a thorough external investigation into the events that her family believe contributed significantly to her passing at the tender age of 27."
Last month, the Blades also launched a formal investigation into the club's, then-coach, Jonathan Morgan. However, the reason behind the investigation hadn't been revealed as the manager stepped away from his post following the inquiry.