This boss lacks communication skills and was promoted solely because she was the last one left standing from her previous team. (Better not to ask why.) Plus her boss is, understandably, just a bit afraid of this one.
Being a swamp critter, she loves to throw as many obstacles in your way as humanly (?) possible and thrives on chaos. The more disorganization, the better she likes it -- which makes it difficult to get your work done in any semblance of order. Kiss all your deadlines goodbye.
The danger comes when she is put in the defensive. If she thinks that you are attacking her work habits or projects, she will lash out. If you've never learned to swim, this might be a good time.