Currently, I am working for a small company owned by a kind-hearted man. He has even agreed
to sponsor GC. BUT the work environment is shitty. The son of the boss man has a very
stinky mouth and the HR woman is full blown redneck from a small hilly billy town.
She treats employees as if she owns them and acts like the owner. Nobody likes her.

I am thinking of quitting and staying on TPS and look for better opportunity. I cannot let
anyone tread on my dignity just for the sake of GC.

What will happen if I quit? I really don't want to go back.

Any constructive suggestion will be much appreciated.

what is your current status opt, h1b..?

H1B.

I will suggest to find new employer, transfer h1b and then quit. H1b is better than tps....

Thank you for your suggestion but I feel stressed all the time. I have started looking for other jobs too.

No matter how much it sucks for you right now, it's still smart to find a job first and quit. Start being aggressive finding a replacement job.