Is the feeling of sadness and distress due to a female colleague's administrative superiority, despite her low productivity compared to the effort exerted, unlawful, and what is the way to get rid of this feeling?

One should persevere in perfecting work and be patient with it. Seeking worldly compensation does not negate sincerity, and sadness at injustice is natural so long as it does not include anything that displeases Allah. There is no impediment to demanding one's rights through legitimate means.