Verbal Interference 2

[Joe Kupka]

I'm at position C. Runner on 3rd, batter walks & rounds 1st to get in a rundown (pitcher's throwing arm is up). Pitcher is doing a good job of paying attention to both runners, but every time she glances at 3B, BR starts chattering, just loud enough for pitcher (and me) to hear "c'mon, c'mon, you got me...".
It's a throwing situation (not a batted ball), so I didn't kill the play. Should I have called interfence?
(This is irrelevant, but the runner scored from 3rd)