Her plans potentially change (8)
I believe the answer is:
shrapnel
'change' is the definition.
(I've seen this before)
'her plans potentially' is the wordplay.
'potentially' is an anagram indicator (letters have the potential to spell a new word).
'her'+'plans'='herplans'
'herplans' anagrammed gives 'SHRAPNEL'.
(Other definitions for shrapnel that I've seen before include "Pieces scattered after a shell explodes" , "Metal from exploding artillery shell" , "Exploding shell fragments" , "Metal bomb fragments" , "Bits of shelling" .)