Gifted girl’s place at top? That’s open to question (10)
I believe the answer is:
disputable
'open to question' is the definition.
(thesaurus)
'gifted girl's place at top?' is the wordplay.
'gifted' becomes 'able' (I've seen this before).
'girl's' becomes 'Di's' (Di is short for Diana).
'place' becomes 'put' (synonyms).
'at top?' means one lot of letters go next to another (in a down clue, some letters at the top).
'dis'+'put'='disput'
'able' put after 'disput' is 'DISPUTABLE'.
'that's' is the link.
(Another definition for disputable that I've seen is " Open to argument".)