She has a point (3)
I believe the answer is:
dot
I believe this is a double definition.
'she' is the first definition.
'a point' is the second definition.
(I know that point can be written as dot)
'has' is the link.
(Other definitions for dot that I've seen before include "One of the signals in Morse code" , "Speck or period" , "One signal used in Morse code" , "Tiny speck" , "Morse symbol; spot" .)