Obstruction question

[David Emerling]

I'd like to poll some of you ASA gurus on the following scenario:

On a hit into the outfield, a baserunner is obstructed rounding 3rd base (after touching 3rd) and falls down. At the moment of obstruction, it was the umpire's opinion that the runner would've scored easily. She gets back up and attempts to continue on but the ball arrives at the plate which causes her to stop. She is trapped in a rundown between 3rd and home. After several throws, she is tagged out attempting to dive back into 3rd base.

Ruling? (i.e. base award?)

I need some opinions on this because there was a recent discussion amongst some very good umpires in this area who disagreed on this one. I'm wondering what some of you guys think.

Thanks!

David Emerling
Memphis, TN