Mom never called or acknowledged me much today

It’s her birthday and she called my sister so my sister could wish her happy birthday today, and barely acknowledged I exist, even when I said happy birthday in all caps to her. I tried calling her so many times and she wouldn’t answer. I spent days picking out an expensive ring and lied to my mom that my sister helped pick it out, but she didn’t help at all, and she never paid me back for half the ring. My sister didn’t do anything, didn’t send a card. I sent all of this and my mom acts like she’s mad at me. She has replied to me…I asked “did you see the happy bday I wrote?” She said “yeah” that’s all she said. I’m not talking about the ring to rub it in her face, I just don’t understand how the daughter who has made no effort for years for my mom’s bday gets to talk to her and I’m ignored.

I’ve spent so much money on my mom, and had severe anxiety every time I pick her gifts out because she is extremely picky. I feel so stupid. I told her how I feel and she ignores it. It’s almost midnight there so it won’t be her bday and she’s awake but doesn’t give a s. I feel so useless. It’s always been this way. The neurotypical daughter who is successful vs me, the brain damaged autistic loser who got screamed at my entire childhood because I couldn’t spell a word. I’m never buying shit for either of them again after this because I’m too sensitive