Polly's Flirtation:
Mental [roll0]+ Influence [roll1] + Tricky Pixie [roll2] + I'm pretty,and nice, and smell good [roll3] + Morgan VoC [roll4] = 15 (but it costs a Plot Point)
Niall's Insight:
Mental [roll5]+ Influence [roll6] + Rising to the Top [roll7] =12
Ok, interesting round, Polly jinxes twice. That adds the D8 complication "Genuinely Flattered" that Niall can take advantage of, but Polly gains a Plot Point.
Niall also Jinxes. Anyone (PM to take credit cause I'm assuming someone will), can place a D6 complication on him by spending a Plot Point that Polly can take advantage of. I think I shall call it, "Sucker for a Pretty Face"
Polly, however, also needs to spend a Plot Point in order to win the round, which brings her total Plot Points to 1 (unless she wants to be the spender, personally I recommend that the guy with 3 give one up or that you guys just let it fall through. What's one more D6 anyway).
In any case, Polly won the round, so inflicts the D12 complication "Infatuated" onto Niall. One more success and he's a gonner.