I would hesitate to go "more extreme" to get her to feel sexual pleasure. It could work, or it could cause her a lot of problems. You won't know until it's too late. I have a very disturbing problem with "extreme fantasies" which has caused me a lot of shame. I didn't know it would cause problems. I just thought it was a solution. But it got more and more extreme and now.. it is the only thing that works, but I would rather never orgasm again than have these sick, sick fantasies. But now they come into my mind and I can't help it. It makes me want to cut out every part of me that was ever a sexual being. I started believing my boyfriend was attacking me every time we had sex. It caused a lot of problems for us in our relationship, made me feel disgusted with him for agreeing to participate, and made me feel disgusted with myself.

Just be careful.