New Girl in My Cl?

There is a new girl who came into my cl today, and she is Brazilian. My teacher wanted me to help her during the cles i had with her.( i only speak english) i kinda communicated with my hands and then hung out with her at recess. But this girl who does speak Portuguese, came over to hr and totally stole her from me. I dont no how to get her back to be my friend, since I dont no how to talk to her. 10 points for best advice. (im in seventh grade)