This is a matter of male and female social relationships. This is what you do
>ask her what she wants
>ask her why she wants it
>inform her of the consequences
>respect her decision unless the spirit is obviously pulling her without her will
>preferably allow her to rid it herself
>he's just feeding off her as he was when he was alive
>purge the motherfucker regardless
Similar thing happened with my girlfriend
>got her into fringe stuff
>she started seeing a little dead girl pop up randomly around her house scaring the shit out of her
>started becoming depressed from the spirit sapping her energy
>told her she needed to get rid of it
>she didn't want to and let it stay
>shit got worse and told her she has to refuse giving it attention and stay as positive as possible
>told her it was for the best
>she finally agrees
>gets rid of it in a week by staying positive and ignoring it
>way happier and better afterwards
If she doesn't listen to you just get rid of it and let her be mad at you and let her cool off. Or just don't tell her you got rid of it. Do not engage in argument if she yells at you. Just tell her you did what you had to do and that's that. She will come around and thank you.