Crossword Genius

In Cervantes, the end is charming and delicate (5)

Ross

I believe the answer is:

elfin

I'm a little stuck... Click here to teach me more about this clue!

'delicate' is the definition.
(I've seen this before)

'in cervantes the end is charming' is the wordplay.
I cannot quite understand how this works, but
'in' is found in the answer.
The remaining letters 'elf' 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).

'and' acts as a link.

Can you help me to learn more?

(Other definitions for elfin that I've seen before include "Delicate, slight" , "Mischievous sprite" , "Sprightly" , "Fairy-like" , "Sweet" .)

I've seen this clue in The Telegraph.
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