Is it worth it? Or should I let it go?

We've been close friends for 4 years and she replaced me in 2023, we didn't text for a year till I DMed her again. Honestly, I wish I didn't, we wouldn't even still be in contact today if she had other people to talk to and a boyfriend.
We've gotten close again in July - Dec 2024 though the start of 2025 everything's been going downhill again and I want to let go of her. I've been thinking about everything that she's done to me that's wrong. These 2 months been really tough, I started distancing myself because I felt like I was expecting too much on her. I never got any reassurance or closure or even an apology on why we 'drifted apart' a year ago. I'm frustrated how I always had to hint out the problems she caused that impacted me while I always knew if I did something wrong and I'd fix it, like always. It makes me think 'am I asking too much?' all the time when I want to receive the bare minimum from her.
We haven't been talking so much like we used to 24/7 and it's causing tension and arguments and she's wondering what's wrong, why she's getting treated that way. It's so frustrating because everything that she's been feeling was what I felt when she stopped trying and texting me a year ago because she got a bf, it's totally fine when she got a bf but she literally stopped talking to me, always dry convos, I always had to text first and I hated it so much. She was like my bestfriend and for her to just easily drop me like that? I guess it was a sign. Lately we've been talking it through a lot, by talking it through I mean me initiating a long convo, argument then talking about the issues and her giving excuses and explanations that aren't satisfying me like I need more than this but that's asking too much. It's so exhausting, she complains she's exhausted too.

I'm a person who holds grudges that stay for a long time but when I talk about it, she always gives me excuses like 'I didn't message you but you were always on my mind' 'why do you keep 'dragging' the past?' (which I never did, I talked about it in depth that one time and how it left me feeling like fuck man. Even if I was dragging the past do you even wonder why I was? )
She said she loves me romantically yet she treats me this way. I just needed reassurance. But I'm starting to feel like a hater so should I let her go?