Sinclair had the ball a decent number of times but always passed to someone else. While this is somewhat useful, opponents need to believe she will attack and shoot or she won't be as effective at pulling defenders away. Otherwise, play her at MF and let Rose play forward.
How many times did Sinclair have the ball? Not many, if my memory is right. I would guess that she was so well marked, that it was hard to get the ball to her. That leaves opportunities for the other players, especially Beckie. So, I think that Sinclair contributes, even when she's not on the ball. Replace her with someone who commands less respect, and everyone else will suffer.
I agree about Matheson having a good game. The French impressed me with their ability to guess where players were going to pass and intercepting the ball. That worked well against the younger players, but I seem to recall that Matheson was mostly wise to it.