Armed police were called to reports of gun shots being fired on Shawclough Way in Rochdale, at about 21:50 on Tuesday.
Miriam Nyazema, 35, was found with stab injuries and treated by paramedics, but later died in hospital.
Josphat Mutekedza, 35, was charged with murder and firearms offences when he appeared in court Friday.
Friends of Miriam claimed on social media that she may have been dating the gunman.
A 45-year-old man also arrested in connection with the death has been released without charge.
Police said they were called to reports of a disturbance on Shawclough Way in Rochdale at about 9.50pm on Wednesday.
Numerous reports were received of a man with a gun and further reports were received of shots having been fired.
Armed officers deployed to the location discovered Miriam with stab wound injuries.
First aid was administered by officers and paramedics and the woman was taken to hospital. She died later from her injuries.
Superintendent Alistair Mallen said: â€œOur sympathies are with the family of the victim and we are currently working to find them so we can inform them of this tragic news.
â€œWe initially received numerous calls a man was seen holding a firearm and shots had been discharged. When specialist firearms officers gained access to the house, it was established the weapon was a BB gun.
â€œUnderstandably, residents will be shocked and upset by what has happened and although we believe this is an isolated, we have increased patrols in the area to offer reassurance.
â€œTwo men have been arrested but I would appeal to anyone who may have witnessed what happened to contact police.â€
Nyazema had worked at Shawside nursing home in Shaw for 13 years.
Ruth Yates, area director for Bupa Care Homes, said: â€œEveryone at the home and within Bupa is deeply shocked and our thoughts are with Miriamâ€™s family.
â€œMiriam was a great nurse with a caring heart, who brought a real ray of sunshine to the home.
â€œI have known Miriam since she joined us in 2002 and she has always been incredibly popular with our residents, their families, and all her colleagues.
â€œWe are providing support for her colleagues and our residents, and providing whatever assistance we can to the police investigation.â€Post published in: Featured