OBS...Did I Do This One Right?

[Al]

Last night in a T-ball game ...2 outs, girl on 2nd base....Last batter comes up to the plate. (In T-ball the defense must bring the ball to the plate on last batter to end the inning.) Here's what happened > The last batter hits a grounder to the 1st base side of the field. The runner on 2nd is about half way to 3rd when she was badly obstructed and had to almost stop running because a fielder got directly in her way and even bumped into her. As she continued to run she rounded 3rd and was about half way to the plate when the boy that fielded the ball touched the plate to end the inning.

Here's what I ruled...> I said the run does not count as the OBS only protected her to 3rd base and IMO the OBS cost her no more than 10 feet. I explained to the coach had his runner been less than 10 feet from home plate when the fielder touched the plate I would have called her safe because the OBS. ... Did I use the correct metric of the rules, and make the correct call? ... Al