Sunni, I think Patrizia and rustpot's suggestions are perfect.

Don't say the word "carb" or "atkins." Use the words "sugar," "processed," "refined flour," and blame everything on DH's doctor.

Don't worry too much about getting your fat in--you can put olive oil on things (is she too much of a philistine to have olive oil in her house? bring some), and don't try to teach her anything, since she knows it all!

There may be a day when the LC/atkins battle is worth fighting with her...but there also may never be. You could reach goal and she would probably say "but it'll just come right back on." You could reach goal and stay there for the rest of her life and on her deathbed she will be saying "It's just water weight, you'll gain it all back..." with her last breath.

People like this will find a way to make you miserable no matter what.

Bring plenty of string cheese, Laughing cow cheese, etc. If it's possible to bring a cooler, do so. If MIL freaks to see you eating hard-boiled eggs, for example, tell her they are special eggs and have extra Omega3's (some eggs do, how can she tell which ones you are eating).

Most of all, good luck, get through it, and don't go back for as long as you can avoid it!

Lucy

ps Gooserider, you can get plenty of fat from dark turkey meat and turkey skin...