Am I wrong?

I am the maid of honor in my best friends wedding the first weekend in June. I planned the bachelorette party as a spa day months ago and gave birth the end of of April. My baby is EBF and won’t take a bottle and the spa is 2 hours away. Plus lunch and shopping after so an all day soirée. I told the bride I wouldn’t be going after all and explained the situation, but told her I would confirm everything sans make sure it was good to go. She got upset and then told me not to bother she filled my spot and asked if I would even be able to be in the wedding if my child was so much work. I’m so hurt and confused, just wondering what you ladies would do??