[jhanschoo]

> evidence showing single dads get better treatment than single moms?

This is not the question that needs to be shown; while parent comment is indeed a single mom, she cited sexism as the obstacle. This is not necessarily due to her particular circumstance as a single mom but may refer to discrimination that all women face.

Sexism is easier to show, due to the intense research on it. Not knowing a priori her experience, every year research comes out of some think tank about gendered discrimination in the workplace; a google search should return results.