I just got that STRESS is used by raising its number, not lowering it. 

I can use ALLURE at most three, the other three I reserve for resistance rolls and magic INVOKEs.

Since the rule given says 
[quote]Spend stress to turn the charm on, TRICKing [i][b][u]victims[/u][/b][/i] to come closer[/quote]
then I will roll it for an anti-group effect