Complex sentence: She took on the mantel of responsibility with active sppport from Eadie and her sister Maria Carstair Spiers reportedly returned to Ayr to help steer the firm through the war years.
Split into simpler sentences: She took on the mantel of responsibility with active support from Eadie. Her sister Maria Carstair Spiers reportedly returned to Ayr to help steer the firm through the war years.