Bro, if she doesnt want to learn a new language, it's her right. She's trilingual, thats all that's expected from a student in school. (I know my shit. I speak french, english, learning spanish and japanese. I suck at spanish tho.)
Using Positive Reinforcement as a Classroom Management Tool at the Secondary Level
Stop negative behavior in your classroom before it starts by reinforcing your expectations and recognizing positive student behaviors. With two simple tools, I successfully managed student behavior at the secondary level. A ticket system and "shout outs" are little to no cost, require little work for you as the teacher, and will encourage on task, positive behavior from your middle school and high school students.