You have gotten great advice and I agree with it all. I am sending good vibes your way and wish you the best and know that you will find it in you to do this!! When your own health and mental health are taking a beating, you need to do what is right for YOU.

The parents will likely be defensive but stick to facts and keep calm. Tell them that it's explained in the letter and if they have any questions they can email you. I think face to face is great but because this is your first time I don't think emailing is a bad idea.