A pedestrian who died after she was struck by a car has been identified as a beloved grandmother out on her evening walk.

Daphne Cottee’s loved ones laid flowers at the crash site on George St in Gosnells, in Perth’s southeast, and told 7NEWS they will remember the 80-year-old as a caring person.

Cottee was hit by a Kia Rio hatchback while crossing the road just before 6.30pm on Sunday.

Teenager Eugenie Smith was among the first on scene and rushed to try and save her using CPR skills learnt during swimming lessons.

“Just riding home from work when I turned the corner — obviously there was people standing around (Cottee) so I went to ride off but I turned around and was like, ‘I’ve got to do something’,” Smith said.

Cottee was taken to Fiona Stanley Hospital, where she died.

Relatives described her as the matriarch of their family, and will remember the grandmother as a gorgeous, caring person who looked after them.

“You were loved. You were special. You will be missed greatly,” read a note to the nana.

Cottee had lived in Gosnells most of her life and was just 100 metres from home when she was struck.

“I feel very sad because I served her yesterday. She came here, bought milk, bread, coffee,” a local worker said.

“I’m shocked because I just saw her.”

Police said the driver involved, a 44-year-old woman, stopped at the scene and was not injured.

Major Crash is investigating and has called for witnesses.

No charges have been laid.