Devastated and need to vent

This isn’t pregnancy related, but I just got a stock email with tons of typos from a former employer that didn’t want to hire me back. I’m a teacher and left this elementary school 2 years ago to teach middle school again. I was trying to determine my course for grad school. Well, the AP while I was there is now the Principal. I was interviewed like every other candidate. Everyone in the interview knew me and said they put me down as their nominee for the position. But she sent me a stock rejection email with tons of typos and didn’t even use the name that I go by to address me. It hurts that she knows what a good teacher I am as she did the majority of my evaluations while I was there and always gave me highest marks. She couldn’t even send a personal email. I’m so bummed and have no clue what I’m going to do for work. I know it’s what was meant to happen, but it’s like a dagger.