Gained Access to Email, What Next?

I'm a high school student, trying to gain access to a teacher's account on the PowerSchool service. I got her school network password by recording her typing it in. She has reused this password for both her school-official email address and her personal email address (and several other sites), so I have access to both. However, she is using a different password for PowerSchool, and it also isn't the default password. PowerSchool claims that it's logging each failed attempt, so I don't think I can use Hydra. To reset her PowerSchool password, she needs to contact an admin, so that isn't an option.

So, does anyone have any ideas on how I can leverage access to her email account? I made a Chrome extension to record her entering the password, but then discovered that the school policy prevents her from syncing Chrome extensions on her official school account. I'm running out of ideas now.