I may not be of much help but remember Lizzie Dalziel, used to visit as a child. My maternal grandmother was Elspeth (Effie) Moffatt, subsequently married Alexander McLaren and lived in Glasgow. I holidayed as a child in Glasgow with my mother and father from Northern Ireland, staying with my grandparents and a visit to Wanlockhead was always undertaken. Lizzie had a sister, Phemie.
Your great aunt Jean Moffatt would have been related to my grandmother, maybe a sister as Lizzie and her sister were referred to as cousins of my mother if my memory is correct. Unfortunately my mother died in 2010 aged 89 and my recollection of her family on her mother's side is vague.