It may come from friend, but also from foe in fact (9)
I believe the answer is:
affection
'it may come from friend but' is the definition.
The definition suggests a singular noun which matches the answer.
'from foe in fact' is the wordplay.
'from' is an anagram indicator (the anagram comes from the same letters).
'foe'+'in'+'fact'='foeinfact'
'foeinfact' anagrammed gives 'AFFECTION'.
'also' is the link.
Can you help me to learn more?
(Other definitions for affection that I've seen before include "Warm regard" , "Fondness, tenderness" , "Feeling of fondness" , "Fond attachment" , "Feeling of love or strong liking" .)