i don´t think that someone will cruse when he touched her tails but maybe she is getting lustful in that moment and have sex with that person. as written above they not assault humans only sending her energy into a man but who knows what happen when she sending her energy into human woman if her husband isn´t near or she have no man. i think monstergirls are not averse to have sex with woman to still their lust.
i have heard that kitsune hide as humans and never show their true form to their husband or other people. if someone findout that she is not a human she disapear and never comeback again. stupid! they should play with open cards to avoide this even when there are monsters kitsune normally didn´t harm humans without a good reason. also when they have children her husband will findout that she is no human because all children from humans and kitsune have fox ears and tails.