Before I met my girlfriend, I received a sum of money paid out annually that would allow me to live without having to work again. I explained this to my girlfriend by telling her that I went through a traumatic experience that I don't want to talk about, and that the money was a result of that experience. I also mentioned that I wasn't comfortable sharing the exact amount at the moment, but would be willing to discuss it as the relationship progressed.
However, my girlfriend and her parents have been relentless in their questioning about my money and how I acquired it, despite me telling them several times that I don't want to discuss it further. Recently, while showing my phone to my girlfriend's father, my girlfriend took the liberty of scrolling through my phone. I kindly asked her to return it, explaining that my phone is like a personal journal to me, with notes about my thoughts and experiences, and photos that have sentimental value.
The following day, my girlfriend's father began ranting about how I'm too secretive and not treating his daughter well because I won't share the specifics of my money or give her unrestricted access to my phone.
I believe in personal boundaries and privacy, and have already communicated my discomfort with discussing my finances and my need for privacy with my girlfriend and her parents. I'm unsure how to navigate this situation AITA?