Ancestry.com is a user repository. Unless another user added information about your mother there won't be any.
Public records on file with County Clerk's Office, any house of worship of which she may have been a member, the cemetery association of where she's buried, etc. are more likely sources of information. Don't forget the local newspaper which would have published her obituary.
For her family information don't overlook the Church of Latter Day Saints (The Mormons). They maintain one of the world's largest repositories of geneological information that dates back 100's of years. Through them I was able to read a microfiche copy of the actual handwritten parish register about the birth of my great-grandfather in Lynkoping, Sweden in the early 1800's!
You might want to try the following link:
https://familysearch.org/