Looks like there is a good number of folks that think she's notable.  
 http://blog.nj.com/jerseyblogs/2008/08/keeping_katie_reiders_voice_al.html 

 Also, the tumor that killed her is pretty rare. I lived in California and heard of her and heard her music on Sirius.  

 And this: http://news.cincinnati.com/apps/pbcs.dll/article?AID=/20080715/ENT03/307150018 

 Deleting this article further reinforces my belief that wikipedia is going downhill fast because of the agenda-pushing "deletionists." I see NO reason at all to delete this article. KEEP.