I would make her my bitch. Fuck her 24/7/365. Filling all her holes. Making her swallow my cum and cum all over her face. Give her want sohe need, non stop hard fucking and sucking all the time. She would be so ties she would not be able to do anyting at all.
She is giving a lot to the wrong guy, she needs to be loved and have more self-esteem, she is very noble to offer helsef like that but it won't work anyway, poor girl, she's love sick.