child_witch_conversion_failure_effect

child_witch_conversion_failure_effect = {
	scope:guardian = {
		send_interface_toast = {
			type = event_witchcraft_bad
			title = child_witch_conversion_failure_effect.desc
			left_icon = scope:child
			scope:child = {
			 	add_opinion = {
					target = scope:guardian
					modifier = suspicion_opinion
					opinion = -15
				}
			}
		}
		if = {
			limit = { this = root }
			hidden_effect = {
				add_opinion = {
					target = scope:child
					modifier = disappointed_opinion
					opinion = -15
				}
			}
		}
		else = {
			add_opinion = {
				target = scope:child
				modifier = disappointed_opinion
				opinion = -15
			}
		}
	}
}

As written in game/common/scripted_effects/00_witch_effects.txt.