Transparent

Someone who is not a parent to X, but who identifies as a more appropriate parent and advisor to the child X, than their actual parents.

Mrs. Knight, a 5th grade teacher: “Make sure this email is deleted too when we are done bc otherwise when your mom looks, you will be outed instantly.”

5th grader at risk : "Ok, Mrs. Knight. It's a secret. I wish my mom let me do everything I wanted too."

Mrs. Knight, a 5th grade teacher : "Of course, honey. As your transparent, I want only what's best for you, dear."