Judging by Mrs. Carey's advice, and Duke's adherence to it, I would say she had quite a bit of influence - thankfully! JW certainly did care about his fans 
!
Some links for Olive Carey -
http://www.jwayne.com/costars/Carey.shtml
http://query.nytimes.com/gst/fullpage.html...750C0A96E948260
http://www.tvparty.com/vaultadams.html
(scroll down about half way to read about Olive Carey's role in this show - I guess there is a sound file you can listen to, also)
http://www.surfnetinc.com/chuck/hcarey4.htm
(Olive Carey mentioned)
http://www.nndb.com/people/056/000078819/
Mrs. C 
