Don's touching sympathy (6,7)
I believe the answer is:
fellow feeling
'sympathy' is the definition.
('fellow feeling' can be a synonym of 'sympathy')
'don's touching' is the wordplay.
'don' becomes 'fellow' (I've seen this before).
'touching' becomes 'feeling' (feeling is a kind of touching**).
'fellow'+'feeling'='FELLOW-FEELING'
(Other definitions for fellow feeling that I've seen before include "Sympathy" , "Shared empathy" .)