Any studies on the negatives of female masturbation?

Having a discussion with my girlfriend about it and she seems to think that doing it in moderation without porn is perfectly fine and even healthy in order to release stress. My side of the argument is that abusing your body parts will stimulate those dopamine receptors over and over again, even if done infrequently. Over time, naturally, your desire to engage in masturbation essentially completely subsides into nothing because those neural pathways just fade away, and you can start seeking out more healthy, productive sources of serotonin rather than dopamine. However, if you keep doing it even once a month, those pathways always gonna be there.

I'd also argued way prior for the more philosophical route in that lust and love are two entirely separate entities, and that PMO clearly falls into the "lust" category, and she'd seemed thoroughly convinced that lust is inherently a bad thing and we should strive for love instead, which has been a theme that's carried through our discussions basically all the time. She also wants to believe that her body is indeed a temple and that she shouldn't desecrate it. Maybe since the conversation was a while ago, she might have forgotten it. I don't really know.

Since evidently she's not believing my word, I want to show her some studies about the negative effects, but the ones I've seen posted here seem to be centered mostly around males (since I guess males are more apt to becoming addicted to PMO and whatnot), and as such, she's not really taking it as valid evidence. She also thinks that those studies are focused on those who are addicted to PMO, rather than those who keep it in moderation and masturbate without porn. She went on Google and looked at headlines to prove her point that masturbation in moderation is in fact healthy. The same people who are literally being paid by the porn companies to say that masturbation is healthy and reduces prostate cancer or whatever baloney they spew out. Sites like Healthline (links from which take up the majority of the results on the first page) literally say pornography is healthy to watch and not addictive. I can’t help but feel sorry for anyone who believes them.

However, though she says this, she admitted prior that every time she does do it, she feels intense guilt and shame because of some "stigma" behind it. Shame over the fact that she feels like she has nothing better to do to release stress, and from people around her saying it's bad. I'd told her that that cognitive dissonance is never going to go away no matter what, even if she kept it secret, and the only way to stop it is to never let it occur in the first place. At the same time, she doesn't want to feel like she's being policed or told what not to do because it's "bad." She doesn't like having her freedom taken away and that's what she feels like is happening when I tell her these things. However, she agreed that not doing it would be a good test of self-discipline/self-control/willpower and a boost to self-esteem. She claims she'd already tried to cut down on it and even stop watching porn, which she does agree at its core is bad at least. But I'd like to convince her somehow that the very act of masturbation is also bad. Not just anecdotally, however.

Thanks for any help on the topic. I trust you all to stay strong in these trying times.

I have 7 studies that I've found in my research, but I can't link them since my account is too new, I guess. I'll let you know if I already have anything that might be linked.