vacation- dirty heads

I'll try to be short. I'm 25 and she is my first gf which btw i found after reading trp for a year and improving myself. She is 19 and our sex life was always AWESOME! we both craved sex like crazy and she started asap doing kinky stuff i like like swallowing, bjs and stuff like that.

First 4-5 months i had a problem, ED issue... i was a kissless-virgin and i was struggling hard to get a full erection, even if we just went on with HJ,BJ and me using hands&tongue, our "sex" sessions could go on for hours no stop and we both truly enjoyed them.

After a bit i fixed my ED issue (nofap was a life saver) and i started having PE issues but i could go for 2-3-4 round so it wasn't really a problem. our sex life was greater than ever!

now 1 year has passed and we have this deadbedroom issue from like a month now... she doesen't engage sex anymore, she doesn't feel to do it in the car because she gets "stressed" "why would u do it in a car when we got your bed?" and ofc any other public place is forbidden...

before this, ALL the times i invited her in my house we would always have amazing sex after dinner/launch but now se just goes to my pc asking to watch a film or play games, if i try to start something sexy she shut it down saying "i dont feel like having sex right now"

we still have sex but it's like 1 time every 10 days and it's really boring, she doesnt suck anymore, doesnt want to do anal she basically just lay there waiting me for cum. it's really a dealbreaker to have sex like this.

so what i did? i tried to talk with her and told her my sex needs are not getting fullfilled and i demanded an explanation, she told me that she just dont have much libido anymore, she doesn't know why and dont know what to do to fix it. i asked her if she masturbate still (she confessed to me while having sex that se masturbate a lot and even watch porn) and she told me that se doesn't even get the need of masturbate anymore. i basically told her that im hoping she'll get back her libido sooner than later and that im not happy sexually. but in truth i really want to bring her old self back!

now some facts: *we both enrolled in a stem degree this year and it's pretty stessfull (but this problem started 2 week before)

*she has a really stressfull situation at home, her parents constantly try to deny her accomplishment and just use her like a slave to clean, cook and generally help arround the house while her bigger brother do nothing but get still cheered for every little shit he does.

*i got fatter, i never was in a good shape but i was the classic skinny fat but a bit skinner than usual, now i got 10kg of fat and even if i'm tall it looks bad (1.87x82kg)

*when we had sex she would even squirt(i'll like to had i'm her third bf and i'm the only one that made her squirt and orgasm by penetration) and she just enjoy it so much overall, now she is barely wet enough to penetrate.

*my dick isn't that big (14 cm, not even fat) but my hand game is really good, sadly she doesn't even let me touch her anymore because "i'm too violent with my hands and i hurt her" suddenly. this really lower my sexual skills

*i feel like i lost autorithy overall, and she is more affectionate overall, sometime i feel like she treats me like retard and she gets mad if i try to correct her stupid behaviour.

what can i do to fix this? she had much patience with my ED&PE issues so i'm not planning to next her soon and im gonna give her time but there has to be something i can do to fix this mess....