Searching for Information About Mary Cochran

Mary Cochran born in Lurgan Northern Ireland about 1836, She emigrated to Sydney Australia, she became fairly well known as a Pianoforte School Conservatorium . In 1914 she published her first book sight reading Pianoforte Tutor.

Does anyone have any knowledge or information of my great aunt Mary Cochran.

Her parents evidently went out with Mary to Australia, but must have returned to Ireland as they are both buried in Ireland .
I look forward to hearing from some of you.
Heppy