Ms Grant’s family said her death “has already sent shockwaves through all who knew her or were lucky enough to be included in her orbit”.
“We ask for privacy at this time while further investigations are underway and the family try to come to terms with this enormous loss,” they added.
Detective Chief Inspector Andrea Bowell, from South Yorkshire Police, said: “This will be a deeply distressing time for the families of those involved in this incident, and I would ask their privacy is respected as they seek to understand what has happened.”