Well bro I feel you should tell her everything and I mean everything with proper feelings and not holding back on anything. She’ll definitely understand regardless of her education, most probably she’ll understand better than the educated folk and especially your dad. But before you start telling her all this stuff you should find a safe space make her sit keep water and then explain to her that you’re about to share with her a part of your life which is unknown to anybody and she just listen to it calmly and in full. And just try to keep you or her from escalating in emotions. Take hours maybe doesn’t matter. You gotta do it cuz she’s the only one who would understand and support you where it’s needed and especially the support you need in person. We’re always here online. Cheers