She’s awfully good, very soft with sad heart (5)
I believe the answer is:
pippa
'she's' is the definition.
'awfully good very soft with sad heart' is the wordplay.
'awfully good' becomes 'pi' (I've seen this in other clues. I am not sure about the 'awfully' bit.).
'very soft' becomes 'pp'.
'with' is a charade indicator (letters next to each other).
'heart' indicates the central letters.
The central letter of 'sad' is 'a'.
'pi'+'pp'+'a'='PIPPA'
Can you help me to learn more?
(Other definitions for pippa that I've seen before include "-- Passes (Browning)" , "woman" , "she passes in verse composition" .)