The victim was pronounced dead at the scene in Orgreave Lane, Handsworth, on Thursday this week after emergency services were unable to save him from “serious injuries”.
The post-mortem examination has concluded Mr Grayson died as a result of stab wounds.
Ms Grayson has been charged with murder and remanded in custody. She is expected to appear before Sheffield Magistrates’ Court today, Saturday September 15.
Detective Inspector Simon Palmer, the Senior Investigating Officer, described the situation was “highly emotive”.
He said: “Mr Grayson’s family are being supported by specialist officers during this incredibly difficult time and have asked that their privacy is respected.
“I fully appreciate that Mr Grayson’s death is highly emotive but I would urge people to think about comments they make on social media and the impact it could have on the family.
“I’d also like to ask that people refrain from posting speculations, to enable criminal proceedings to progress through the courts unhindered and to allow the family time to grieve.”
An unnamed neighbour told The Sun: “They were lovely, always just pottering around in their garden and always stopped for a proper chat.
“They were one of the originals from the street still left. It’s just hard to believe – I’m so upset. Marjorie was good friends with my mum.”
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