She shows Ken possesses a warm heart (5)
I believe the answer is:
karen
'she' is the definition.
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for karen that I've seen before include "oriental language" , "Girl" , "Girl's name - ethnic Thai in Burma" , "Carpenter of note" , "One at home in 15 across [AARHUS]" .)