So her fancy meal has scope for fungus (5,8)
I believe the answer is:
horse mushroom
'fungus' is the definition.
(horse mushroom is a kind of fungus)
'so her fancy meal has scope' is the wordplay.
'fancy' indicates anagramming the letters.
'meal has' becomes 'mush' (I am not sure about this - if you are sure you should believe this answer much more).
'scope' becomes 'room' (both can mean space).
'so'+'her'='soher'
'soher' is an anagram of 'horse'.
'horse'+'mush'+'room'='HORSE MUSHROOM'
'for' acts as a link.
Can you help me to learn more?
(Another definition for horse mushroom that I've seen is " Large edible fungus".)