Sorry for not responding before, but I just saw this tonight! Yes, your friend's grandmother, Mary Jane Bercier, is in my files (except I had her being born on the 5th, not the 4th, but I guess your friend would be more correct than me.)
Mary Jane was the daughter of Jean-Baptiste Bercier and Elise (LaFramboise) Bercier.
Please give your friend my email address (firstname.lastname@example.org
) because I would like to get in touch with her. Does she live in Belcourt or still near the reservation?