Nally family

I am trying to gather genealogical information on Maggie Nally (1873-?) had 4 children (no known father), Katie Nally (abt 1891), Mamie Nally (abt 1892), Bridget Agnes Nally (abt 1894) and Helen Nally (abt 1897). Katie, Mamie and Bridget were in St Elizabeth's Industrial School (235 East 16th St, Manhattan) until they were transferred to St Ann's Home in Peekskil, NY in October 1897. The 1910 nFederal Census shows all 4 girls with their mother living at East 80th Street, Manhattan. No other information except for Bridget Agnes.