I was going through my TiVo suggestions just now, and apparently, "Wild On The Beach" (1965) where she gets second billing on TiVo's description, was apparently on Fox Movie Channel at 4:30am PST on 1/10/2012.
Imagine my delighted surprise!
Once you see the title, the next one that shows up says:
"Starring
Frankie Randall Sherry Jackson"
And...it's a musical.
Her character apparently discovers that the house that was willed to her by her Uncle has been invaded with the Amazing Singing Beach Guy College Kid.
Mayhem and romance ensue.
In beautiful and exotic black and white.
I still love you, Sherry.