Interference and Obstruction during same play

[UmpireErnie]

This play (or something like it) came up in another thread and was never really answered or discussed so I bestow upon it, it’s very own thread!

PLAY: No outs. R1 at 2B, B2 hits safely thru the infield. Rounding 3B, R1 is obstructed by F5 and falls to the ground. She gets up and retreats to 3B. In your judgment she would have easily scored.

Meanwhile the ball is thrown to F4 in an attempt to put out B2 who is trying to stretch the hit into a double. The throw is in time but dropped by F4. B2 in a desperate bid to avoid being tagged out kicks the ball away from F4.

I am pretty sure at the point B2 kicks the ball we all have “Dead Ball”. Now what?