RANT: obese people that PUSH dieting advice!!

I have a friend whos is super obese, she is 5' 4 inches and weighs 298, yet every single time I try to talk about my diet she acts like shes an expert because her mom is a nutrishionst. I was talking about my carbs being at 150, she started FREAKING out on me about how there is NO excuse for ANYONE to eat that many carbs a day, and MFP is a crock if it sets your carbs so high, its setting you up for failure and your just gonna mess everything up, and to quit now before I destroy my chances at a "good diet" this went on for what seemed like forever I tried to argue that I wasn't doing some elimination diet, I needed to LEARN how to control what I put in my mouth, quanities and moderation, and she freaked out again. NO, its not about moderation, its about changing your life and what you eat. If you go out to dinner and they offer you a bread basket, its not about stopping yourself after one peice of bread, its about being able to not eat the bread at all. I told her that type of life style/ diet would never work for me, because I would start to feel like i'm suffering "without" and I just wanted to focus on eating RIGHT, and not about what I can and can not eat. Again, starts flipping out. "my mom is a nutrishionst, she knows this ****, if you don't want my advice dont talk to me about this crap, I don't want to hear it!" so I stopped talking to her about it...for awhile.
Than just a few days ago she noticed that I posted on facebook that I had lost 16 lbs, and she starts FREAKING out about that, it's only been 3 weeks, if youve managed to lose 16 lbs your doing it the wrong way and your just gonna fail, and your skin will never tighten and youll look worse "skinny" than you would fat. Your just messing everything up. I tried to remind her that at least 8 lbs of that was inital water weight, but she still freaked out on me. I also tried to remind her that not everyone can diet the same and that no two people have the same idea of "do's and don'ts" with eating healthier.
So now to my final point. Today. Just now, infact the conversation is still going on as I type this, but i've just got to the point where I'm like, "yeah, your right" "uhh huhh" "i know" and not truly paying attention. Lol
Anyway, I asked her if she had any recepies for low cal/carb deserts or treats to curve my sweet tooth. she said "you don't want to do that, it will jsut lead to more and more junk, and than youll get even more fat, and than it will never stop, you need to cut it out COMPLEATLY, I never had much of a sweet tooth, but my downfall was bread and until I cut it out compleatly I cheated, and you cant cheat on a diet, you need to go at least 6 months before you touch a sweet so you no longer have the cravings, and you can eat less of it" I instantly got peeved. Shes talking to me like shes a weight loss expert, when she DID manage too lose nearly 60 lbs, than GAIN it ALL back and than some within less than a years time. I hate it when super big people **and I'm a super big person myself** try to preach health advice, because CLEARLY, all my ideas of "health" worked out for me...RIGHT?? It makes no sence. Like a few weeks ago **before I started my life change** I was talking about eating animal crackers, and she starts spazzing out, "DO YOU KNOW HOW MANY CALORIES ARE IN THAT" than SLAPS it from my hand and throws it in the trash....I dont know about you, but I did't become over 200 lbs from eating salad and lean meats....so how could someone be nearly 300 lbs and have any idea of health conscience choices??? GAHH I just want to yell at her. ANYWAYYY Any low cal or low carb, or BOTH, treat recepes anyone?? I NEED MY FIX!