Scottish queen ruled, perhaps, English admitted (9)
I believe the answer is:
madeleine
'scottish queen' is the definition.
(Madeleine of Valois, 16th-century queen consort)
'ruled perhaps english admitted' is the wordplay.
'ruled perhaps' becomes 'madeline' (used a ruler).
'english' becomes 'e' (abbreviation).
'admitted' is an insertion indicator.
'madeline' enclosing 'e' is 'MADELEINE'.
(Other definitions for madeleine that I've seen before include "Item on sweet menu" , "Small sponge cake" , "Woman" .)