2 easy obstruction questions

[Little Jimmy]

Irish,
Are you saying that there needs to be some act before the runner reaches 1st base for obstruction to be called? The situation described has a player without possession of the ball standing in B1's chosen path (through the bag). The fact that B1 made an abrupt shift to her right at the moment she touched the orange bag seems enough to at least consider obstruction.

For what it's worth, I was plate and my partner was in the standard A position for the safe/out call. At the moment I felt I should defer to her on the call/no call.