Saskatoon divorce records are on FS
https://www.familysearch.org/ark:/61903/3:1:33S7-9T7T-SCBP?i=12&cat=1469036 (docket index)
File starts page 568, runs to 664
https://www.familysearch.org/ark:/61903/3:1:33SQ-GT7Y-SPK?i=567&cat=1469036Mostly legalese but here are some useful bits:
580: a history of where the Glovers had lived + list of their children
581: a date of April 1920 for the beginnings of the relationship between Robert and Ellen (this places Robert in Foleyet, Ontario, at this time)
596: a private letter from Ellen to Robert (Bob), summitted as evidence
629: another private letter, this from Ellen to her mother? mother in law? Calls Adam "Murray" and talks about changes in law that will allow her to marry Bob. A second hand (probably the mother) has written something uncomplimentary at the end.
631: original marriage certificate Adam and Ellen
636: another private letter, Ellen to Bob (followed by a typewritten transcript).
643: a letter from Robert to Ellen ("EK")
I didn't see any reference to Janet, but perhaps she was deceased by April 1920 when the affair started.