Ms Norris said on X, formerly Twitter, that she had been injured “whilst myself and another passer-by were trying to help a woman who had collapsed”.
She described the incident as a “tragic mess” and “awful for all the families involved, but worst for Chris’ family”, according to the Local Democracy Reporting Service.
In a further update on her condition, posted on Facebook, Ms Norris said her surgeons were “pleased” with how her knee was healing.
She added: “They screwed the top of my fibula back on and also reconnected all the side ligaments.
“They have given me a new, hinged brace. It’s locked straight currently and I have to keep it on 24/7 for two weeks. Then I have an appointment to review and start physio if appropriate.
“I came home in a lot of pain but it’s already much better, I’ve only needed half the painkillers today.”
Mr Jhangur, of Whiteways Road, Sheffield, appeared in court in connection with the incident on 2 January.
His trial date has provisionally been set for 15 July this year.
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