Um yes is it normal. its the equivelent of a parent putting finger nail polish on a 4 0r 5 year olds finger nails to stop them from sucking on their fingers. some parents around here use soothing powders, creams, bath oils, bath bubbles as a way of stopping a child from masturbating when its not appropriate to do so. when you think about it even adults enjoy the feeling of creams, powders and such down below. it calms the natural bodily itches and sometimes the need to touch "down there" I even know some dads, boys, and adult men that recommend various home remedies, creams, powders down below to help cut down on the need to "re adjust their self" help keep down there dry,free of sweating and the need to masturbate.

my point in my family, culture, religion and laws this would not be considered to be abuse.

my suggestion is if this continues to bother you contact your treatment providers. they will be able to figure out based on your locations laws, ethics, parenting styles, religions cultural ways and such as to whether it is actually abuse for you or not.