Profile manager researching death date. No records have been found after 1860 land and Census records.
Aily was born about 1800 based on Census records. She married Hillery Breland in 1818 in Marion County Mississippi, and was enumerated in his household until 1840. On the 1840 Census, Aily was enumerated as head of household with six children. The oldest child was to age 19. There were seven slaves listed in 1840, but none on the 1850 Slave Scedule. Perhaps the slaves were on loan or hired out from neighbors and relatives, the Thornhills and Rushings.
It appears she was a true pioneer woman who managed well after Hillary was gone. In addition to the forty acres Hillary had purchased in 1836, land records show Aily purchased 40 acres of land in 1853, 40 acres in 1854, and 240 acres in 1860. Perhaps these purchases were based on lands being sold for twelve and one-half cents per acre. According to author, Luke Connelly Ward, “In the early fifties a great excitement was started in Pike County by John King. An order had been issued by the Interior Department under statutory provisions authorizing the entry of lands at twelve and one-half cents.” 
Map Township 2 Range 10, Mississippi Territory
After the 1860 Census, this profile manager has not found any other records. Some descendants show death 1898.
Breland_Ailley; image 12 of 46; Ancestry.com. 1840 United States Federal Census [database on-line]. Provo, UT, USA: Ancestry.com Operations, Inc., 2010. Images reproduced by FamilySearch. Original data: Sixth Census of the United States, 1840. (NARA microfilm publication M704, 580 rolls). Records of the Bureau of the Census, Record Group 29. National Archives, Washington, D.C.
Breland_Aly; image 7 of 19; Ancestry.com. 1850 United States Federal Census [database on-line]. Provo, UT, USA: Ancestry.com Operations, Inc., 2009. Images reproduced by FamilySearch. Original data: Seventh Census of the United States, 1850; (National Archives Microfilm Publication M432, 1009 rolls); Records of the Bureau of the Census, Record Group 29; National Archives, Washington, D.C.
Breland_Ally; image 80 of 158; Ancestry.com. 1860 United States Federal Census [database on-line]. Provo, UT, USA: Ancestry.com Operations, Inc., 2009. Images reproduced by FamilySearch. Original data: 1860 U.S. census, population schedule. NARA microfilm publication M653, 1,438 rolls. Washington, D.C.: National Archives and Records Administration n.d.
Breland_Ally; Mississippi, Homestead and Cash Entry Patents, Pre-1908; United States, Bureau of Land Management; 1997, ancestry.com
It may be possible to confirm family relationships with Aily by comparing test results with other carriers of her mitochondrial DNA.
However, there are no known mtDNA test-takers in her direct maternal line.
It is likely that these autosomal DNA test-takers will share DNA with Aily: