I’m shocked some male hasn’t approached her and made a deal to get the $180 mil and then split it.
Her father may have required ‘proof of conversion’.
I don’t know what kind of proof would suffice that couldn’t be faked for a while. Probably too late to expect a hymen to be intact.
He should just adopt a student or young adult male and declare that person to be his heir. Leave daughter-girl alone. Two stubborn people engaged in a power struggle doesn’t usually produce much change. Or, she should just move out on her own like most adults do.