Police investigating the death of a woman in a hit-and-run crash said they have a number of people helping with their inquiries.
Mrs Stead was returning from work
Paula Stead, 32, died after she was struck by a Jeep Cherokee in St Luke's Road, Sunderland, on Thursday.
Her daughter Bridie, 11, was also hurt along with Danica Green, the 10-year-old daughter of her cousin.
The two girls have had surgery and police said they were hoping to speak to them on Saturday.
A Northumbria Police spokeswoman said: "Police have a number of people assisting them with their inquiries.
"The two young girls remain in hospital.
"One of the children has undergone surgery for serious leg injuries the other for a suspected fractured arm and leg. Both are said to be doing well."
The driver of the Jeep - who was being followed by police - fled, but on Friday detectives said they were making inquiries relating to a person who may have been involved.
Mrs Stead was returning from her second job cleaning at a dental surgery when she was fatally injured.
Police have appealed for witnesses to come forward.