Okay, I have just trawled the 1901 census for Elors Village, and for Sullivan (which in 1901, was North grey, not South) and not a single whisper of a sign of Margaret

On an offside, I am amazed at how many adopted children there were, and all to people who already had a few kids. Why would this be?
Added: there was a family of McIntosh'es in Sullivan...A Donald (b.1824) and a Mary (b.1834) - children, Cameron & Christina
Next door to them, was Alex (b.1872) with wife and son, Next door to that was: mother Ann McIntosh (b.1844), and 3 sons, John Thomas & Hugh