Tending to disrupt runs with gin mixture (7)
I believe the answer is:
nursing
'tending' is the definition.
(nurses tend to patients)
'disrupt runs with gin mixture' is the wordplay.
'disrupt' indicates anagramming the letters.
'with' is a charade indicator (letters next to each other).
'mixture' indicates anagramming the letters.
'runs' is an anagram of 'nurs'.
'gin' anagrammed gives 'ing'.
'nurs'+'ing'='NURSING'
'to' is the link.
(Other definitions for nursing that I've seen before include "Caring profession" , "Feeding baby" , "Medical vocation" , "sister's career" , "Caring career" .)