Muller or Robins

Looking for info on Mary M. Muller (nee Robins?), who was born in Indiana in October of 1846 or 1847, and died around 1928. She is listed as the widow of a civil war vet from northern NJ on his pension record. The veteran was my great great grandfather Maurice Muller (also known as Morris Miller or M. Alfred Muller).
Mary was married before and her other last names may have been Collins/Connell or Seeley.