Female member of a string quartet (5)

I believe the answer is:
viola
'member of a string quartet' is the definition.
(I've seen this in another clue)
'female' is the wordplay.
I cannot really understand how this works, but
'female' could be 'vi' (short for Violet, a woman's name) and 'vi' is located in the answer.
The remaining letters 'ola' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for viola that I've seen before include "Plant; instrument" , "Bowed instrument slightly larger than a violin" , "whose player takes a bow" , "Page" , "part of Shakespeare" .)
