I got nuttin'
The BR must avoid interfering with the defender making the play on an untouched batted ball. If she goes to the right, it is an avoidable delay, but if so, F3 could have been called for OBS.
I believe the BR did a good job. Once inside, she stayed inside. If she crossed the line to get into the running lane and interfered with F4 taking the throw, that would be INT.
What am I missing here?
The BR hit the ball and ran...It was never close to the BR interfering with F2 fielding the ball, so that exception to the running lane rule is irrelevant in this play.
The BR was not in the running lane (even though it wasn't properly marked), the quality throw hit the BR before she reached first base, I've got an out here.