After you mentioned it, I looked it up. She just wanted off the show because she didn't want to be typecast.There was some hullabaloo on twitter with the actress that played her and the director or producer of the show. Director was trying to retcon himself as a good guy and he got called on his abuse and bullshit
Seriously, I looked it up.Sorry, I dont feel like being told I'm arguing today.
I was miserable. I couldn’t wait to get off that show. I was dying. This was not an overnight decision. I was grateful to have made that many episodes, but I didn’t want to spend the next six years going “Aye, aye, captain,” and standing there, in the same uniform, in the same position on the bridge. It just scared the hell out of me that this was what I was going to be doing for the next X-amount of years. I think you have to take your chances.