Re: Not coping with the new sensei
I trained with an abusive teacher for about a year because there just weren't better options. Our two top students left and started training on their own in another dojo.
One of the happiest days of my life was walking out the door of the old dojo knowing I would never return. It was not pleasant informing the sensei I would not be back but I thought it was the courteous thing to do.
For the last 7 years I have looked forward to every class rather than dreading going. My attendance has certainly approved as has my aikido.
If you're not happy there. If you feel the need to complain or question your sensei's actions it is time to go. If the sensei has been acting like that for a while, as I gather from your post, she isn't going to change.
Our "new" dojo has picked up about 7 refugees from the "old" dojo due to the sensei's attitude. They have all expressed relief and joy at being in a supportive environment - even though we train much harder.
Good luck to you.