Dora was Alexander's 3rd wife. They only had one dau Lucille who was tragedically killed by her husband. She is buried with her mother.

1900 census Justice Precinct 4, Lavaca Texas
Alec C Leslie abt 1853 Louisiana White Head md 2 years
both kids from his lst marriage. [Ted, Roy]
Dora L Leslie abt 1873 Tex White Wife had 0 kids
Ted Leslie May 1887 Tex White Son Alex 2nd wife son
Roy F Leslie Oct 1892 Tex White Son Alex 2nd wife son

1910 Justice Precinct 4 Lavaca Texas
Alec C Leslie b Aug 1852 LA 47y md 2y Md 12 years
Alex was married 3 times
[Eldora] Dora L wife b Mar 1873 TX 27y md 2y 0 kids born md once in 1910
Ted Leslie b May 1887 13y TX son Alex 2nd wife son
Roy F b Oct 1892 8y TX son Alex 2nd wife son

1920 Eldora Leslie Age: 38 Est birth year: abt 1872 Birthplace: Texas Relation Head of House: Wife
Father Birth Place: Tex Mother Birth Place:Miss
Spouse name: Alex C Home 1920: Justice Precinct 4
Lavaca, Texas Marital Status: Married Race: White
Gender: Female
Household Members: Name Age
Alex C Leslie 59
Eldora Leslie 38
Theodore Leslie 23 2nd wife son
Roy F Leslie 18 2nd wife son
Lucille Leslie 7 Eldora dau 3rd wife

Eldora might have remarried after Alex died, as a DC was
found that could be her but can not confirm for sure it is
as her last name is Reagan not Leslie and its said the marker at her grave has Leslie on it but the dob/dod do match for her in our data. also the DC says her dad is a
Booth Smothers and her dad was Archibald Jacob or AJ
and far as known never as Booth.

name: Dora Reagan death date: 09 Apr 1925
death place: Hallettsville, Lavaca Co Texas
gender: Female race: white death age: 54 years 22 days
birth date: 18 Mar 1871 birthplace: Lavaca Co Tex.
marital status: Married occupation: Housewife
father name: Booth Smothers
father birthplace: Lavaca Co Tex
cemetery: City burial place: Hallettsville
burial date: 10 Apr 1925
film number: 2113846 digital film number: 4165569
image number: 180 reference number: rN 15043