Here's the story from her site-
http://www.shelbywalker.com/news/stories/161145742.php the news is coming from Larry Goldberg, her manager.
Shelby was a female fighter out of ATT in Florida, in addition to her own fight career her fiance was Pride MW tournament finalist Denis Kang.
Shelby "Girl" Walker was born Feb. 27, 1972, her mma record was 3-3 and her pro boxing record 7-5. Orginally from Corpus Christi, TX, she was fighting out of ATT in Coconut Creek, FL. Her most famous mma opponents were Adrienna Jenkins and Tara Larosa, and boxing was Mia St. John.
My thought and prayers go out to Shelby's family and friends, Denis, and the whole ATT team.