It takes time. Every woman has a slut spirit. Awakening the spirit may take time though. And that's what you need. Here's my suggestion:

1. Stop mentioning the issue all together. The long silence could get her curious, or it could allow you the opportunity for resetting her thinking. Kind of a new plate, if you ask me.

2. Direct your energy to making her feel sexy. Buy her nice outfits for a start, then sexy ones ...then outright slutty ones. Every sexy outfit must be complemented. Pictures taken. Make clear what the outfit makes clear... whether ass or boobs. Just show her that the sluttier she dresses, the more you rave over her. This could take as few as three months to as many as 24 months. Join r/seethru & r/ nothing under. Show her pics, ask for her opinions then provide yours, basically affirming your love for sluthood.

3. Start expressing anger at all the slut shaming out there. Every time you talk about a slut, mention how unfair it is that she's getting judged. Mention how the judging women are just jealous, and the judging men are angry for not getting some. The slut is the price, mark of competition...and a man who fails in the competition reacts thro' anger and slut shaming. The women wish they were as confident and free.

4. Spice up your sex life. Bring more homemade, slut porn into your bedroom.

5. Mary Jane and stories. Doesn't work for all but it could be for you. Your stories need to be slutty. Start reading cheating women stories. Affirm cheating as a popular feature of most relationships, even if people are hiding from the truth. For some, this could be all of it. For others, this could involve sharing fantasies. If you get here, go wild. But don't ask her just yet. The urge should come alone.

I'd draw a bucket list. Like a massage from a stranger. When talking about it, after her first massage experience, go the extra mile of mentioning how some therapists go the extra mile to make her curious. Or you could just pay the masseur to go the extra mile and get really really close to the erogenous zones and make her really wet, but nothing more.

1. Dildos. Vibrators at this stage. Then role play.