I’ve read the essay. It lacked (to put it kindly) academic merit. It was not supposed to be a paper on apologetics. The very least she should have done if she wanted to base her reaction to the source material on Scripture was to include verses on gender to show how this has anchored society’s perception on there being a clear division of two (not 2 not 20 not 50) genders.
The professor’s answer did show her personal bias however the essay should not have been given a passing grade because it did indeed fail to provide sources. However, there was one very important point made in that reply and that is the unfortunate fact that the social sciences now all agree (wrongly) that gender is not fixed or binary. Which means if the student is majoring in any of those sciences she has chosen the wrong uni to attend because any defense against that idea whether religion based or not will be met with either disdain or outright hostility. It will also mean an uphill battle when she is graduated to put her beliefs into active practice.
She needs to find a college that affirms her values while holding her to academic standards.
The issues here supersede the quality of the essay.
From your statement it appears a public university is using tax dollars to teach antiscience religion to young college students.
That alone requires legislative intervention. Clean that mess up before more youngsters are damaged.