Background
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There is a coworker at work who is an amazing coworker in terms of the job. He aids as many people he can in any way he can in addition to being a quick problem solver. When asked to comment about him during a performance review, I stated as such.

In the section where it states "going against company values", I stated that in a (presumably) fit of frustration, he referred to someone as a "girl". One of the values is "Respect". The comment was not made directly to the woman, but rather in reference when talking with another male colleague. She was in her 50's and works in Information Security. I also stipulated to not hold that against him because I shared his frustration about the matter. However, that specific terminology seemed questionable to me. There is a part of me that feels I overreacted and it may have been an unethical example of abusing the "going against company values" section. However, given the circumstances of the situation above, I am not sure.

Question
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Is including the way a coworker referred to a woman as a "girl" reasonable to put in the section of an evaluation called "going against company values"?