Old studio photograph Margaret McGrath

I have a large & beautiful old studio portrait in very good condition of my Great-Grandmother Margaret McGrath née Nugent that would have been taken in late 1800’s or early 1900’s. She sent it out to Australia to her daughter, my Grandmother Margaret Gibbs née McGrath. The photograph is in Ireland Reaching Out - Ancestors. Would anyone know which photography studio could have taken the photograph perhaps by the background in the photo.  I would love to get any information.  Margaret McGrath lived in Barrack Street, Cappoquin. Her husband was John McGrath. 

Many thanks for any help/advice  Marie Terese