Sparkle shown by dizzy girl entertaining Mrs French (7)
I believe the answer is:
glimmer
'sparkle' is the definition.
(thesaurus)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for glimmer that I've seen before include "Shine faintly and waveringly" , "Faint wavering light" , "Faint glow" , "Flicker" , "Shine faintly with a wavering light" .)