@Margaret DaleyHi Margaret and welcome to the forum!
I'm afraid Shiney Row no longer exists and neither does the coal-mine (the Doctor Pit) but this is what it looked like. Shiney Row is the row of houses on the right. The small buildings opposite are Shiney Row's toilets and coal sheds. Railway cottages were two in number and located at the far end of the street adjacent to the pit head and the railway line which was used to take coal to the port. They later became known as Dr Pit cottages. Visit the gallery and search for 'Shiney Row and Doctor Pit' to see more of the immediate area.
If you can give me any more information about your grandmother and mother (ex. full name, date of birth, parents names, place of birth) I'll see what I can find out. If you don't want to give information here you can message me. Just move your marker over my 'hat' and choose 'message' on the bottom line.