Malinda somehow ended up in Michigan, and married William Sexton there in 1907:
"Michigan Marriages, 1868-1925", database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:N3JK-GLW : 15 January 2019), William Sexton and Malinda Watkins, 1907.
The record gives Malinda's parents as Thos Bush and Eliza Felty; Malinda was born around 1877.
Here are Malinda and William with Silas and two Watkins siblings in Michigan in 1910:
"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MLPZ-QW7 : accessed 30 May 2019), William M Sexton, Mancelona, Antrim, Michigan, United States; citing enumeration district (ED) ED 11, sheet 14B, family 230, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 635; FHL microfilm 1,374,648.
Robin, is this new information to you? If not, please let us know specifically what missing pieces you need.
Edited - remarried 1907, not 1881.