Are these Millicent (Stedman) Clarke's mother and sister, also in Lot 29, in 1881:
1881; Census Place: Lot 29, Queens, Prince Edward Island; Roll: C_13163; Page: 59; Dwelling 246, Family No: 246. (at ancestry.com)
Hanah E Stedman, 57, born in Nova Scotia, Presbyterian, widowed, Origins: can't read. ancestry transcribed it as English
dwelling 247, family 247
William Howatt, 42, born in Prince Edward Island, Church of Scotland, Origins: Scotch, store keeper, married
Maray Howatt, 46, born in Prince Edward Island, Church of Scotland, Origins: Scotch, married
Hanah Stedman, 20, born in Prince Edward Island, Church of Scotland, Origins: can't read. could be English, no marital status, therefore single