I find it reprehensible that academic professionals would marginalize and persecute an student for sexual misconduct that neither occurred nor was the concern of those involved in such conduct.

That a dissertation advisor who would otherwise claim to be a professional would abandon a student less than three months before her dissertation defense (due to allegations) has greater merit in calling for a conduct review than the original charges. This clearly can be construed as discrimination based upon sexual identity and should damage the reputation of the school as it failed in an institutional duty to the student to provide a non-hostile environment.

Everyone is entitled to his or her own opinions about conduct, but to allow that to affect your professional relationship with a student is a moral and ethical failure in any measure of academic professionalism.