She was promoted, it seems, out of big-heartedness (5)
I believe the answer is:
rosie
'she' is the definition.
'promoted it seems out of big-heartedness' is the wordplay.
I cannot quite understand how this works, but
'it' could be 'e' ('e' can mean 'electronic' which is similar to 'IT') and 'e' is located in the answer.
'of' could be 'o' and 'o' is located in the answer.
The remaining letters 'rsi' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
'was' is the link.
Can you help me to learn more?
(Other definitions for rosie that I've seen before include "Char" , "Girl's name" , "Cider with - (Laurie Lee)" , "Female" , "It could be tea" .)