Obstruction

Question
A batter hits a ball to right center field and attempts 2nd base. Rather than taking a position at 2nd base or towards the outfield as a relay, the fielder takes a position directly in the base line between 1st and 2nd about 6 to 7 feet from 2nd base towards 1st to recieve the ball. This position would have required the base runner to make a drastic course deviation close to 2nd base to avoid contact and still be able to get to the base. The throw comes in directly to the fielder and the runner is tagged as she trys to avoid a collision.

Is this Obstruction?

Response
Obstruction can be a very difficult judgement call.
In the situation you present, it could be obstruction or not depending on how exactly the play unfolded.
It is obstruction if a fielder blocks the runner's base path without possession of the ball.
However if the fielder gets out of the runner's way or receives the ball (even at the last moment) it is not obstruction.