I have a friend I did a freelance project with. She was an absolute nightmare - didn't stick to deadlines, didn't follow the brief, needed endless corrections, sent me texts in the middle of the night, demanded more money halfway through the project, and I ended up having to give her some of my fee to get the project over the line. She's got a lot going on in her personal life and I still like her as a person but I almost had a breakdown working with her. It was an ongoing project and it's due to start up again but I'd rather bang my head repeatedly against a wall than work with her again. How do I politely tell her I'm not using her again for the next phase of the project? I was thinking of just saying the company the project is for wants someone cheaper which is sort of true - definitely if she demands more money halfway through again. I just can't think of what to say!