I'm not going to go give her any advice, because she doesn't want it and isn't going to listen to it. She doesn't give a shit about losing weight, any more than Amberlynn does; she just wants sympathy pats, and for people to get off her case. But I'll dump it here anyway, where she can't delete it.
If she doesn't want to use measuring cups, or weigh anything, and then she needs to bulk out her meals with lots of low calorie density green vegetables. Cukes, broccoli, celery, cabbage, lettuce, spinach, etc. can be very filling due to the fiber in them, and eating them with a proper amount of fat and protein will keep her feeling satiated longer than all of the carbs she eats do because she won't be on a blood sugar rollercoaster.
Her natural hunger and satiety cues are completely fucked up. She doesn't really know what it's like to be genuinely hungry; all she knows is craving. She doesn't know what it's like to reach genuine satiety; all she knows is feeling stuffed. And her with all of her bingeing and routine overeating, her stomach is so stretched out she doesn't feel stuffed until she's devoured huge quantities of food. So replacing most, if not all of the bulk carbs she eats with vegetables will at least help reduce the number of calories she's taking in on a daily basis, as long as she doesn't go completely apeshit with fatty dressings and sauces.
In fact, she really ought to avoid the carbs/fat/salt combo altogether, given that she's so addicted to it. When you have an eating disorder--and she most definitely does--you just have to face the fact that there is some shit you really can't eat without wanting to binge, and avoid it. She's a carboholic, and continuing to eat the foods she does is not going to help her.
The other thing that would help immensely is for her to take smaller bites, and take time to actually chew each mouthful thoroughly before swallowing, then taking the next bite. Digestion starts in the mouth; chewing food sends signals to the brain that say, "Oh, hey! I'm eating!" But Chantal takes such disgustingly huge bites of everything, and barely chews before swallowing, and has barely swallowed before wolfing down the next huge bite--so her stomach doesn't get the satiety signal from her brain that she's eaten until she's already overstuffed herself. Take smaller bites, chew them thoroughly, swallow them completely before taking the next bite, and it's amazing how little food it takes before you feel full.
I'm not holding out any hope that she'll ever fix her busted eating habits, or lose weight, or get her shit together, though. I would not put my money on her. I think she's too far into her addiction, and too personality disordered to effectively address it.