[officialtony]

I will respond in two ways:

First, Your judgment not only matters - it is critical. You are the one making the calls and applying the rules. You cannot alter the rules or their intent, but applying them in judgment situations is your right and responsibility. So, yes, your judgment DOES matter;

Second, absent any contact in your scenario where the fielder waited to play on the ball, I have no interference. R1 waited to give F6 enough time to play the ball but is not required to wait all day either. If you feel that no interference was present, then that is the call you make - in your judgment. And that is how you sell it to any complaining coach.
" Coach, R1 waited to give your player enough time to make her play on the ball. I felt R1 now has a right to advance at her own risk without waiting any longer for F1 or F6 making a play on the ball. Now let's play ball. "
Hope that helps a little.
just my humble opinion.