I think you're overthinking. Do you trust your soon-to-be-wife? If so, the stripper won't matter. If not, call off the engagement. You shouldn't have to eliminate any source of temptation in order to ensure your partner's fidelity. Now you say she may be pushed into it because she hates confrontation, but she should hate cheating on you even MORE. So that should stop her. If it doesn't, it's best to find out by allowing her free will to tell the story.