Advice please.

So I'm torn in my decision to attend/be in my "best friend's" wedding. We have been friends since we were 8. Now both 27. She is actually my only real friend besides my husband. Or so I thought.. She has a lot of friends. She's been planning her wedding for over a year. Quite frankly I'm tired of hearing about it. Yes, I know it's an exciting time but she's had 3-4 engagement parties. She's also had a silent auction to raise $$ for honeymoon. She's invited over 200 guests. She was my maid of honor. She stood before my sister. I am just a bridesmaid & I'm like 2 down from her. We used to talk all the time. She tells me "I'm so busy wedding planning". Well what I see on fb is her out on the lake with all her friends, at bars, whatever. Sooo you're too busy for me you mean? I hope this doesn't sound like jealousy. I know how she is. The bridesmaids dress cost me $171. I took her bridal portraits & did her hair (I'm a cosmetologist) after she paid her cousin $400 for her shoot already. I took 5 hours of pics myself & gave her what she truly wanted. She was going to buy my dress for payment. She retracted that & I had to pay BC of her wedding expense. She bought a $60 clutch to hold at reception lol. Too each their own. Her wedding is beginning of Oct. My husband is a groomsman. W don't financially have $$ for his tux. I honestly am wanting out of this wedding. I want out of our part time friendship. Is this wrong of me to feel this way? She's got like 10 other bridesmaids... I don't think she'd miss me. 😔😔 she's turned her back on me in some of the worst times in my life.