Ines
I understand you felt bad.
But,if it is a sort or family trzdition,maybe you,or your parents,should explain her it is partly due to the fact she refuses to wear a chastity belt too,and if she accept it willingly,it would be better.
I remember Ivana had a similar situation,with one of her daughter,and,as she knew her mother and her two sisters,all belted,have a lot of fun and laughs during cleaning time,she felt a but jealous to not be allowed to participate in it,and it was one of the reasons that made her finally accept to wear a chastity belt too(probably having more freedom and privileges have played a role,too).