Perhaps it would be tight and irreproachable to have the householder wonder: how, with so many religions claiming faith in Christ, we can know which religion demonstrates that faith?
Avoid the old canard about the "love" among the JWs shows faith in Christ--(it's a slogan too often used and not so true).
I would point out the many examples when Jesus commends the ones who step forward in faith. The woman with the issue of blood who violated the rules on cleaness, the father of the demonized boy and the man (un-named) who heals in Jesus' name who evidently had more faith than the apostles at that time (they had been unable to heal the demonized boy and Jesus reproved them for their lack of faith), the Roman soldier who had faith, the screwed up Legion who had the commission of trust to tell the truth of his healing, the syro-phonician woman, the Samaritan woman, the man healed of his blindness who is thrown out of the synagogue.
What is the take-away? A religion must teach these bible examples and allow that these examples of faith were highly individual and valuable to Jesus himself. And in whatever measure a religion permits the exercise of such faith within its members then it is doing right.
She won't get an "A" but if there is any negative feedback from her demo it would be interesting to hear. I am glad you are resisting feeding the Beast any more than you have to.
Good luck. Let us know how it goes.