Interference Question

[Stair-Climber]

Happened last evening during my 12 and under 2.75 hour game (no time limit).

R1 at 3B and B2 is right handed batter. Passed ball hits backstop, and veers off to right toward home team dugout. R1 is attempting to score on passed ball. B2 is backing away from possible play at home plate. I even motioned for B2 to back out of the way. When F2 retrieves ball, B2 is directly but unintentionally between F2 and where F2 needs to go in order to tag R1. In fact, F2 runs into B2 in her attempt to get to R1. R1 makes it safely home, but would have probably been tagged out if B2 hadn't been in the way. I did not call interference because I felt that B2 did exactly what she should have done (get out of the way of possible play at home) and did not intentionally get in F2's way. I know that it is a HTBT play, but I would like some feedback. Can interference be called in that situation if B2 is not intentionally interfering with play?

[Edited by Stair-Climber on Jun 10th, 2005 at 12:33 AM]