Minnie/Mary had a sister Nora who married James SHAW. They are enumerated as boarders with Mary age 21 and her husband John COLLARD age 23, 1880 census, New Haven Twp., Shiawassee Co, Mich.
And she had a brother John b. about 1864/5.
Minnie's parents from her obit: Melvin and Elizabeth Aselton.
familysearch.org site: Melvin Aselton b. 11 Feb 1836 Canada married Sept 1857 Elizabeth MINKLER b. about 1840 Canada.
familysearch.org: Melvin's parents: Isaac "Esseltine" b. 1810 and Nancy CHILTON. Places they resided: Canada, Washtenaw Co., Ingham Co., Branch Co., Jackson, Mich.
I have the 1850 census of Isaac, Jr. 40 b. Lower Canada and Nancy 40 b. LC, - Ingham Co, Ingham Twp, Mich. Presumably their children: Melvin 18, William 15, Sarah 9, Permelia 7, Aurelia 5, David 2 and Isaac 86 b. NY.
I also found the 1850 census for Henry Aselton (ATHELTON in the index), Ingham Co, Ingham Twp. - Henry 56 b. VT, Rosetta 44 b. Lower Canada, Timothy 20 b. LC, Isaac 18 b. LC, Luke 16 b. LC, Cynthia 13 b. Mich, Henry 11, Lucy A. 9, Horace 4.
In 1880 Henry age 86 b. VT a widow is enumerated with Peter ASELTINE family, Ingham Co, Ingham Twp.
Peter 54 b. Canada, Maria E. 46 NY, Edgar 20 MI, Norman A. 16 MI, Albert 15 MI, Etta Belle 6 MI, Ida A. GARRISON gdau, Henry ASELTINE, age 86, father, b. VT, widow
family search.org site
Peter ASSELTINE b. 17 April 1826, Missisquoi, Quebec and died 26 March 1910
father: Henry - mother: Rosette WHEELER
That's about all I know about the Aselton/Aseltine family as my main interest has been the COLLARD line.