No one has right to enforce to wear a chastity belt to another person.
If you are in that position, you are the victim of abuse. Ask for help.
Here you have an excerpt of German laws, but all Western countries have similar rules:
§ 1631 BGB Inhalt und Grenzen der Personensorge
Content and limits of personal care
(2) Children have a right to an upbringing free of violence. Physical punishment, psychological injuries and other degrading measures are inadmissible.
Here you have some interesting links.
Lifeline: Call 13 11 14 for crisis support.
Call 1800 RESPECT (1800 737 732) any time for confidential information, counselling and support in cases of sexual assault, domestic violence or abuse. You can also call 1800 211 028 to speak with a trauma specialist, 24 hours a day.
For police dial 000.
Contact Child Protective Services (CPS) In your state. Be aware that teachers, doctors etc have mandatory reporting.
Call 1800 422 4453 to speak to a specialist.
Call Weisser Ring Victims Helpline on 116 006