model for middle schooler

I’m trying to teach the model to my daughter to help her see that her thoughts are creating a lot of the anxiety she feels. But she is having a hard time with the concept of her “truths” being her thoughts.

I realize that she is only 11 and may not have the maturity to fully understand this concept yet.

Is this concept just too difficult for kids to grasp? I plan to keep working at it with her, but I’m trying to manage my expectations around it.