I'm having sexual problems with my girlfriend

Hi, I'm new here. My girlfriend and I are going through something unusual, to say the least. My girlfriend won't let me touch her for anything in the world. she has a "problem." She always seeks me out for sex and prioritizes me (and she makes me feel great), and she doesn't let me reciprocate.

She's very restrictive about the parts of her body I can touch. For example, I can't get near her neck because it makes her incredibly nervous. The first time we tried, I went to kiss her neck, and she simply stopped everything she was doing and left it for later. I remember exactly her pushing me away and lifting her head with both hands "protecting" her neck. I didn't understand anything, and she explained, embarrassed by her atypical behavior, that she didn't like other people touching her there. I was extremely confused, and later I realized that every time when we kiss, she actually places my hands on her shoulders or face. She even made a draw of acceptable places to be touched, which I still have on my bedroom wall. Hair is in the orange zone, neck, ears, and genitals in the red zone, the rest is green except for the joints.

She takes control of all the action, which is sexy, and I don't mind that, but she gets extremely frustrated when something deviates from what she envisioned (which she doesn't tell me; it seems she lives in her own introspection, and even in those moments i can see her getting lost in her own thoughts sometimes). Sometimes it seems that in those moments I exist only to be served and fulfill an aesthetic role. I say this both because I always find myself following some of her fetish guidelines, and many times after giving me pleasure, she goes to the bedside table and pulls out a sketchbook just to draw me, and without any emotion, with a completely neutral face. Sometimes she looks at me with a clinical air.

She's very anxious and has already told me she suffers from intrusive or random thoughts. Once, in the middle of sex, noticing she was lost in her own thoughts, I asked her what was going on. She said the most random thing I've ever heard in my life: "I'm sorry, I was thinking about Godzilla." I've never laughed so hard in my life, I can't stay frustrated, so I even asked if she wanted me to buy a monster costume, and she got annoyed at my teasing and said, "Stop teasing me, both animals are suffering terribly." Referring to both her and the character suffering (she's really obsessed with this dinosaur, and for context there's a scene in the movie that we both saw together where the monster, as it evolved, bled through the streets it was destroying; I think that, and also how much they bombed it, affected her), she said this in a funny tone.

And apparently, it's something that came from the factory. These details don't seem to have any pre-existing trauma because we talk so much about everything, and she's already said that nothing like abuse or anything like that has ever happened to her. The only thing that happened to her is that her sexuality was repressed for a long time.

She simply doesn't let me resolve her situation. She can be very aroused and do nothing about it. One day, very curious about this habit, I asked if she masturbated when she was alone, and the answer was simply, "No, I get bored easily or stressed." And that was unbelievable to me because, aside from those details, she's a pervert and never had a orgasm in her life!

And realizing something that probably to avoid this type of question she leaves me exhausted until I go to sleep, one of these days I witnessed after putting me to bed she go to the living room and watch pornography, do push-ups (???) in a very obsessive way and go take a shower and go back to bed.

I honestly don't know what I can do about it; it seems more serious than I imagined, And she takes it as a joke. I myself, while writing this post, realized that my tone probably wasn't that serious, but while I was organizing what I was writing, I'm a little apprehensive.