While I have no specific details to offer you, I would bet that her parents are either from the Frenchville Maine area or across the border in New Brunswick. Madawaska Maine or Madawaska, NB. Sirois is a very common name there and I have a few ancestors. Unfortunately they are collateral lines and I have not had time to check out. Do you know who her parents were (mom's maiden name)? I may be able to look up in the Marriage Repertory of Madawaska....it might provide a clue.