1) Lewd acts meeting a legal definition are already illegal.
2) Can’t yell Fire in a crowded movie house either. Our rights have limits when they start to affect other peoples rights. So the Jew cannot prevent me from eating Pork nor can the Muslim demand I pray 5 times a day. Nor can we imprison you for failure to attend church.
She does have a responsibility to notify police of Lewd and other illegal behaviors. She has the right to protest, picket and possibly to use a megaphone (time of day, location etc. dependent) She has a right to lobby for Laws to be changed.
But she doesn’t have a right to tell you or I to do anything because Her faith requires that you and I _______.
Do you expect this mother to say nothing as she and her children are forced to witness two men or two women rubbing each others backs, holding hand and looking at each other with doe eyes?