Patriarchy disguised

I can't count on how many times have I heard a father/ brother say that I am making her do this/ or controlling her for her own good. She does not know what is right for her. I am doing this because I genuinely care for her.

If you did genuinely care you would let a 21+ decide what's right for her. She's legally adult for a reason. She can make her decisions. Your job is to guide her not to decide for her! She might make mistakes but will learn from them and come out only stronger. Isolating her like she's a criminal will not only make her lose her trust but will make the situation go out of hand and hasten any damages. What she needs people around who are friends that love when she's going through this vulnerable time not patriarchs who want to control/ manage the situation.