Can I rant for a second? Thx

So, I have an extremely complicated relationship with an ex-best friend of mine, and there are hundreds of layers to our history. And believe me, this is only the short version of our complicated relationship...

We're gonna call her...uh, Ann. Because it's short for Annoying >:(

So...Ann and I go waaaay back. Childhood best friends, and we were always pumped to see each other every time I would visit the US. But when we moved back to the US permanently, that's when things began to change. You see, when we moved, I had no one. I was homeschooled, I had no neighbors that were my age, I lived out in the country, our church had no kids my age except Ann, and we couldn't afford any clubs or classes of any kind for me to take part in and socialize. So I was stuck with Ann, wether I liked it or not. But back then, I was best friends with Ann, so she was all I had. Problem was, I only got to see her at church, about 6 hours a week, which for a very sociable kid like me with only one friend, wasn't enough.

Eventually, I grew more and more introverted and reserved, while Ann remained childish and scarily extroverted. I also matured 100x quicker than Ann did, since I am 2 years older, and because of the way my parents raised me vs. how Ann's parents raised her. As you can see, it was a recipe for disaster.

I quickly grew tired of her childish ways and miserable due to my loneliness. It got so bad, that I resented going to church just to avoid seeing her, and I developed an unhealthy emotional attachment to YouTube since it was the only thing to keep be company and happy. But that didn't last forever.

One day, Ann's mom told me that her Brother and his family were moving here and joining our church, and that their oldest daughter was my age. You wouldn't believe the relief I felt, assuming that this new girl was as mature as me. And I was right. We hit it off immediately, and as her cousin, she quickly started to understand my pain. And though my new best friend has changed my life dramatically, that didn't mean that Ann was no longer a nuisance. The moment Ann realized that my new best friend was stealing me away from her, she grew jealous and petty. My new best friend, uh, Amaya (short for Amazing), has a little sister that is closer to Ann's age.

Unfortunately, it's been almost 3 years, and Ann has still not understood the fact that we've grown apart and continues to try and befriend me once more to this day.

She blames Amaya for "stealing her best friend" even though the truth is that I wasn't stolen, I ran away.

I could go on for days about how it's impossibly hard to say anything considering our history, our parents strong friendship with each other, her immaturity and "easily-hurt-ness", her parents' lack of awareness, and the fact that we see each other twice a week...so you'll just have to trust me when I say that I've tried to get it through her head, but it doesn't work. And if I were to tell her what I really thought, then it'd do more harm than good.

By the end of the month, I'll be seeing her more and more often, which is extremely painful information for both me and Amaya. And even Amaya's little sister, Ann's new best friend, has come to me countless times, telling me about how Ann has become a nuisance for her as well, since she also is maturing beyond Ann.

What do you think guys? I need help.