I'm going to purposely show private messages at work after a friend acts like a jerk.
Why would you purposely show private messages?
I want my friend to be laid off from work and go hungry.
Sometimes friendships can go through things but you should be careful about seeking revenge. It could go wrong and she might expose your secrets.
She would never do that and she will be fired anyway so she will lose all credibility.
Revenge always backfires and in this case your friend will get you back. Even if she gets fired your secrets will be out in the open too and then you will have to explain yourself also.