According to the Find A Grave Entry cited on her profile her parents were Eleazer Dunham and Jane Bryant. You don't mention them in your question, have you ruled them out??
Eleazer Dunham and Jane Bryant marriage registration https://familysearch.org/ark:/61903/1:1:FCS9-89D
Her birth registration with mother Jane Dunham https://familysearch.org/ark:/61903/1:1:F4C3-926
Her marriage registration https://www.familysearch.org/ark:/61903/1:1:F4FD-9NY
FamilySearch sources page for her https://www.familysearch.org/tree/person/sources/KP4S-FR4
