I want to rewash the dishes my room mate cleaned. I don't trust she did it right.
If they are already clean why rewash them?
Because I think she did a bad job of cleaning them and I think she put germs on the dishes.
Next time you should offer to wash the dishes first if you do not trust her. I doubt she would intentionally contaminate the dishes after exerting effort to clean them.
She's a dirty bitch.
Being rude to your roommate by calling her names like that or thinking she can't clean dishes correctly is not a good idea. If she finds out that's how you feel about her, she may not want to live with you anymore and you won't have a roommate anymore. If you aren't happy with how she cleans dishes, then talk to her so she can change her cleaning method.