Here is a link to the record of death for Ana Gabay, wife of Lope Ruiz de Esparza. The date is already known, there are three Gedcom entries with it, however I could not find a link or reference to the primary source (could be there, I am just not terribly computer savvy)- but happened to come across it through Family Search. Anyway, just in case, here's the link:

https://familysearch.org/pal:/MM9.3.1/TH-266-11773-144905-84?cc=1410092…

Mexico, Catholic Church Records
Aguascalientes
Aguascalientes
Sagrario
Defunciones, 1620-1701
Image 57 of 280

Regards
Denise Fastrup