She shared a bill with singer Harry Lauder and violinist Mackenzie Murdoch on a Scottish tour.

[4] She toured in North America in 1901;[5] while in Canada, she sang with a teenaged Henry Burr, at the Opera House in Saint John.

[9][10] During her North American tour, MacLachlan was celebrated in newspapers and helped to increase the popularity of Gaelic song there.

[11] "Whether it is crooning a Highland cradle song, or a call to the clans to take up arms, she is equally successful", observed one New Zealand reviewer in 1907, about her repertoire.

She died in Glasgow in 1916 at the age of 49, shortly after making a "hazardous journey" from France during World War I.