Re: Not coping with the new sensei
You go to the Dojo to practice and learn your Aikido.
If you are unable to practice there and learn and feel unhappy there. The best option seems to me would be find another dojo that you can be happy in. Same choice goes for the other students. While its great to have friendship within the Dojo the main reason you are there is to learn and practice Aikido. You can't change the sensei, she is who she is. Either accept that or move on.