Fretted about church being stolen (7)
I believe the answer is:
pinched
'stolen' is the definition.
(pinching is a kind of stealing)
'fretted about church' is the wordplay.
'fretted' becomes 'pined' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'about' indicates putting letters inside.
'church' becomes 'ch' (common abbreviation).
'pined' going around 'ch' is 'PINCHED'.
'being' is the link.
Can you help me to learn more?
(Another definition for pinched that I've seen is " Haggard".)