Hello, Buttons06!
I have an ancestry.com membership and am trying to see if I can dig anything up regarding your mother, because nobody should be stuck knowing nothing about their own parents(your situation breaks my heart)..Anyway, so far all I have found is that there is a "US Public Records Index" listing saying that there was someone named Sherry Smith whose date of birth is 4-29-1948 who supposedly lived at 2105 W 10th St, Austin, TX, 78703-3840 in 1996! Not sure if it's a coincidence, but I figured every tidbit of info you can find might get you closer to some answers. I will let you know if I find anything else.
Jess
Edited to add, I also found a listing for a Sherry Smith with the same date of birth with the following address (no date attached, unfortunately):
Name: Sherry Smith
Birth Date: 29 Apr 1948
Address: 325 Breezy Ln, Azle, TX, 76020-3203