You are completely right when you refuse to debate and accept invitation for chanting Hare Krishna Mahamantra. Although we should not chant in a society which is disruptive but as soon as one invites us for chanting we take it for granted that they are friendly and we must take the opportunity.
A female is never awarded the order of Sannyasam. Because a female is never considered independent and Sannyasam was never awarded to any female in the past by the great Acaryas like Sankara, Ramanuja etc. The female Sannyasins are to be immediately understood as pretenders or prostitutes. In India they have organized so many organizations where specially young females are maintained to attract rich women-hunters who pretend to pose as righteous in the society. This is the age of Kali which plunders away spiritual sense of the human being and it is only the Divine Grace of Lord Caitanya Who can protect us from all these dangerous pitfalls.