Missed base

[Dakota]

This situation was described on the BB board (thanks, David Van Milligen, if you ever wander over here!). With BB & obstruction, you get into type A, type B, yadda yadda. I was wondering what ASA fastpitch rules would be for this. (I have put this into ASA nomenclature & gender, but left it 1st person, even though I did not make this call.)

B1 hits into gap in right center. On her way past 2B, F6 that was covering 2B backs into R1 (BR). Out fielders still chasing down ball. R1 misses 2B because of the obstruction and continues for a stand up triple. I signaled obstruction, apparently no one knew what the signal meant and no one noticed the missed base. If she had not made it to third I would have enforced the obsruction, and put her on third. Being she missed 2nd if some one would have appealed what should I have done?