I despise men who treat their daughters like this. She's literally a child, yet he seems to have spent years ensuring there's a narrative that it's not acceptable for anyone aside from him to be the "man" in her life. 12 years old, and she's not allowed to exist as her own person, just as HIS. Now he's roping his sons into "protecting" her (I.e making sure she doesn't do anything daddy wouldn't approve of.)
This is nothing more than controlling, misogynistic behaviour. It has nothing to do with protecting and loving her, and everything to do with his own ego and ensuring she stays "pure" in according with his standards.
I feel so sorry for her. She's going to end up dealing with a lot of guilt and self esteem issues, especially as she reaches her teens and, heaven forbid, wants to go on dates like her friends. She'll be shamed for it, and his controlling behaviour will become even worse.
Can't stand him, the squeaky voiced, creepy, odious twat.