Looking for Rodgers Family and Mains Family

Agnes Mains married James Rodgers in Scotland and they went to America pre 1875. She had an illegitimate daughter called Agnes S. Rodgers. The family were in the 1880 census in Acton ,York, Maine, along with Lizzie aged 4, James W. Rodgers aged 2, George Rodgers aged 5 months and a niece of Agnes', Jennie Mains aged 19 years. they worked in the woolen mill. I have not been able to find out what happened to them after this time.