I have an odd issue

I had tried explaining but they are dead set on what she said. I don't want her dead just fired. if I wrote one Id kill her.

As a wiccan, I wouldnt alter another persons life or mess with their karma, because that would result in backfiring on me due to the built in negativity, however, instead you can apply in other jobs, not just that job. THis other person's karma will backfire on her one day without the use of a curse or hex.
I would just do a purification spell, using sage and bring in positivity and calm your senses and mind, then try to find another job or career.

To help with getting a job, you can cast a prosperity spell using four quarters, new, and bury them next to any tree or flower and visualize the quarters as seeds, sprouting and growing and say.

MOther Earth, take this offering and as your trees grow, so will my success, for these resemble seeds, so nurture them so,
Buried in your womb, grow and grow,
MOther Earth, hear me, Harm none, Let it be.

Then watch your luck change, try burying an apple seed with the coins, and water them or let the rain do its natrual work.

BLessed be, Good fortunes upon you. )O(

Alright will do.

I would probs kill her too, a curse would be a useful for that situation, a really harsh one.

I mean when you try sooo hard to get somewhere and its taken away with lies and there's nothing else you can do you're gonna snap... Rightnow I just want her to get fired

Well this sounds like revenge. Dont try to curse her, because you will suffer too. My advice is to make the truth to be revealed,and she will pay more. I will make a truth spell so you can use it in this case.

Karma is always trying to remain in a balance. Be patient and you will be there to watch, and enjoy, as this persons karma regains its balance.

I wish I could have helped but Agnus firmly believes the rumours that were spread. I am hoping her inner brat comes out as well

So far this has become more than just my issue. She has started digging a hole she will be unable to escape in the end

She has begun digging a hole she will be unable to escape in the end anyway.