Little girl making a point (3)
I believe the answer is:
dot
This clue is a double definition.
'little girl' is the first definition.
(I've seen this before)
'a point' is the second definition.
(I know that point can be written as dot)
'making' is the link.
(Other definitions for dot that I've seen before include "Full stop, period or tittle" , "Speck or period" , "One signal used in Morse code" , "A point, small round mark" , "Flyspeck: period in a web address" .)