Lesser of Two Evils

[mook11]

I didn't think that this protest would be that hard to win, but it looks like I am in the minority. Similar situation - R1 rounding second on a base hit to RF. As she rounds second, she colides with R6 and falls down. FU signals OBS, so I tell my runner to get up and hustle to 3B. She does and is called out. PU states that he doesn't think there is obstruction. So - is she out. Is this bad coaching on my part.