This biographical article about Elizabeth Gibson Cheyne is published in the Oxford Dictionary of National Biography online in July 2023.  In her lifetime she was sufficiently well known to be included in Who’s Who (first appearing there in 1912, a year earlier than her brother, poet  Wilfrid Gibson) — but it has taken almost a century for her to join  Wilfrid and her husband Thomas Kelly Cheyne in the ODNB. The article is available behind a paywall, but can be read for free in public and academic libraries in the UK.
The basic outline of her life remains available on this website.
More on Elizabeth Gibson Cheyne here.