Let her know, please, this is not normal faith-based behavior. This seems less evangelical and more proselytizing, and off-putting. Is he helping her in any way? Doubtful. Just putting her on the defensive.
She needs to be blunt with him. I get it; I don’t like being the bad guy either! “Thanks for being concerned, however I’m uncomfortable talking with you about this.”
She needs to report this. His boundaries are awful and he’s probably sharing his “message” with other staff and with the kids. He has his own family to provide for, fine. Your friend is not responsible for him learning appropriate boundaries and proper work ethics.
Sorry if this sounds harsh. Many well-meaning folks have shoved faith down my son’s throat in these situations. Folks have done this to me too but by the grace of God I still found the Church. My son thinks all Christians are close-minded and think he’s going to hell because he was agnostic (now atheist).
The best Christians I knew growing up were kind, selfless, and loved me and were patient regardless of my shenanigans. True witnesses. This fellow is over that line and most assuredly won’t win converts this way. I’m protective of my Church, my faith, and my God, and I get aggravated with this type of behavior.
Let us know how she handles this! Praying for all involved!!!