Just buy her baths 5 time's and you will get vip access, which lets you get to know her better.
I got you. You have to talk to these character, Fawn (condo), Lin-lin (happy massage), Arlene (police station), Sammy (bathhouse), and the homless people near don's lair. These will help you but first talk to alrene and then homeless people cause to save her without losing you have to have arlene beat him.
When you first meet her she will say something like she wants to beat the guy. You will first ask for her help, she will say as long as the slums are quiet, the cops cant do anything, so go to homless people by dons lair and their will be one who will help. Well next day he will be gone and at the gentlemen club and then go back to where you met him and one will actually do it. Go back to arlene and that should get her to help. Sorry if any part of that is confusing, tell me if you need help on certain things.