I'm so pissed. My grandma gave my dog chocolate and I just can't believe it.
That's not good. Why would she give chocolate to your dog?
She just does whatever she wants. She figured that she likes chocolate so the dog should too.
She did something wrong so it's okay to be upset. Just in case make sure she knows that chocolate will make the dog really sick and she should find out if a food will harm an animal before giving it to them. There are a lot of things people eat that animal can't and should never be fed to our pets.
I'm just concerned. I do want to hear what other people think about this.
Your concern and anger is completely understandable. It's good that you're talking it out before discussing the issue with your grandmother. Talk to her calmly so this doesn't happen again in the future.