How to deal with annoying ppl

So i posted a photo of me and my mom's friends son. This one girl from my school posted a video of this other girl (from my school too) laughing and showing my story on her phone saying "look what the what the he looks like a ghost." Im soooo livid rn bc why would you attack a child? Like it's so low of you to do that omg. I didnt respond to the snapchat because i didnt wanna stir up drama. I really wanted to call them out but idk. I want to be the bigger person. How i ignore shit like this?