Given the situation described in the question, we can say that the best label as to her competence is that she exhibits multicultural awareness.
Multicultural awareness is just as it sounds. It is when someone is aware of the importance of representation for every culture, not just the one with which the person most identifies. This is especially important for anyone in a position or role that may include teaching or being a role model to others. The fact that the teacher in question goes to such lengths to maintain multicultural awareness shows that she is very competent.
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