Several different spellings were found in historical records for Azaline such as Azeline, Adeline, Arzeline.
Date of death is unknown, but she was laid to rest in Cushman Cemetery, Marksville, Avoyelles Parish, Louisiana.
Here is some new information from http://www.wikitree.com/wiki/Deville-79 which is still being researched:
Born about in Deville, Rapides Parish, LA[sibling(s) unknown]Wife of John White — married in Avoyelles Parish, LAMother of Azelia Sidonnia (White) DeLoachDied about in LouisianaBiography
Azeline was born about 1859. Azeline Deville … She passed away about 1921. 
Here is how we are related:
Our parents – Nelda Grace LaPrarie was married to Floyd Dee Adams
Nelda’s parents – ^John Alvis LaPrarie was married to Lucy Dee Wright
John A.’s parents –^^Azelia Sidonia White married to John Louis M. Laprarie
Azelia’s parents – ^^^Azaline Deville married to John White
(^) stands for
parents and Azaline.
*Source: Heritage Quest
**Source: OT Belgard Genealogy