Gulp. OK. What are the key points you want to cover? Do your best to stay calm and on-topic. Be pleasant, but firm.
Make a list if you have a to. I've done that before to make sure I say what I need to say and not go too far off course.
D - please prepare yourself. She is really happy cake-eating right now. She may not be happy to have you call a halt to it. It would surely be better for you financially to have some resolution, but the distance could increase dramatically.
