my boyfriends grandma got my daughters ears pierced. Am I over reacting?

So, my boyfriends grandma has been begging to watch our daughter. She’s 10 months. I have said no because I know his grandma, she’s the grandma that argues with me constantly about everything and anything that has to do with my child but it made my boyfriend happy to let her watch our baby for a couple hours so I said okay. Anyways I’m not someone who is anti-ear piercing babies but I didn’t want that on mine. But this lady had the nerve to take my child and get it done without even asking me. Should I be upset about this? Like she didn’t ask me? She knows I don’t have my ears even pierced why would I want my daughters pierced. Now she’s upset and all butthurt that I don’t want her babysitting again.

**UPDATE

So I read threw everyone’s comments. I’m so happy that some people agree with me that I’m not tripping about this! I’m still furious. it was an all day battle with his grandma today about everything. She wanted her money back because I told her I was taking them out. Like is this bitch serious? She didn’t even apologize or admit her wrong doing. Also someone asked what my boyfriend thought and he thought the whole thing could’ve been avoided if she would’ve just asked like a normal person and not undermined us. She’s VERY controlling and has to have control over everything. That being said I don’t plan on talking to her or seeing her anytime soon but I also don’t plan on pressing charges or suing.