What does the cryptic crossword clue "Dainty and, to some extent, self-indulgent (5)" mean?

The definition is "Dainty". The wordplay uses a container (one word inside another). hidden in "" The answer is ELFIN.

Dainty and, to some extent, self-indulgent (5)

Guardian Cryptic #27658 | 24 Across | 2018-11-05 flower