Odd play last night

[Sapper33]

I'm base Ump, ncaa game, Top of 7th, 2 outs, no one on base. batter swings, looks like slow roller towards 3rd base. BR takes off for 1st base, about half way down the line, BR starts acting like the ball hit her after she swung, F5 makes play, I call her out and as BR run s past 1st she says " no, that ball didn't my foot" very sarcastically. HC asks HP ump who says he didn't see it hit her and then I'm involved and tell him same thing. Can't call what I don't see, and it didn't look odd when it came off the bat....oh welll