Hi Sara.
The most prominent advice I'd like to give you is with regards to your body-image/self-image issues. I'll get to fitness advice soon, but let's beat around inside your skull for a minute. Why? Because until your head's in the right place, it won't matter what shape you have or how much space your body occupies, you'll still be dissatisfied with your body. I know because I've been there, done that (in my case, I was way too skinny and wanted to be big and muscular, but the same underlying issues apply). You have a preconceived notion of what beauty is, of what perfection is, but we have imperfect minds that are constantly attempting to recalculate what "perfect" is, based on our ever-changing imperfect positions. Thus, perfect is perpetually out of reach. Today you say you want to see your hip bones and collar bones (not something I'm entirely sure I should be encouraging, but anyway); if and when you get there, based on what I see in your post, you'll still be "disgusted" with yourself. You'll still be "self-conscious." Perhaps even more so than you are now. If you look for something not to like about your body, you will always find it. If you look for inadequacy, you will always find it. You claim to be "literally disgusted with [your]self." That's an internal thing, not an external thing -- you need to work on the internal stuff in order to appreciate what's going on externally.
Now, there are a couple things I have to say about your current weight and progress. Firstly, if you think you know your weight to the decimal place, you're either unaware of how much the scale moves on a daily basis, or you're too concerned with numbers (or, perhaps, a bit of both). The average human with access to a sustainable, reliable daily intake of food and water will fluctuate on the scale by as much as 5lb in a 24 hour period. Furthermore, as a female your hormonal cycle will fudge the data. So you shouldn't be concerning yourself with your exact weight. But if you measure you're weight, it should be in the same circumstances, and with an emphasis on tracking trends rather than worrying too much about individual weigh-ins. At the same time, look for other signs of progress. How's your energy? How well are you sleeping? How focused are you in school/while studying? Are you having fun with your friends? How's your performance when it comes to exercise? How easy are your activities of daily living? How well do your clothes fit? Keep track of these things.
Secondly, 4lb in 2 months is all a teenager should consider losing. Losing weight faster than that is not going to be better for you. So progress-wise, you're actually on the right track. Your sentiment that "nothing is working" is a reflection of unrealistic expectations, not a reflection of reality. This brings us back to working on what's going on between your ears. You've seen people lose 20lb a week on the Biggest Loser, and when it comes to weight-loss products, it's always something like "lose 5lb in the first week." There's a reason why those results are advertised -- they're not realistic or normal; they're more than what you could realistically expect to achieve on a sensible, intelligent plan; and that makes them enticing. Come to terms with what's realistic and what it takes to achieve realistic results, and you might just start to appreciate small successes, instead of comparing your realistic results to unrealistic results and feeling like you've failed. Again, this is something where I've been there, done that, and am speaking from experience.
You talk about eating what's put in front of you, which sounds like it's mostly a dinner issue. What happens with breakfast and lunch? Do you have (or are you able to have) control over what you eat at those meals, and in between? Where possible, I'd advise in favour of substituting foods instead of reducing them, eg eating whole grain bread instead of white; putting meat and salad on your sandwiches instead of butter and spreads; consuming fruit/nuts/dairy for snacks instead of processed sweets. That is, of course, if this is an option for you.
You say that you do Wii Fit Plus all the time. How often is "all the time"? For what duration? What sorts of activities do you do with it?
To sum up:
- Get your head in the right place. Easier said than done, but the solution to all the negative feelings you have is not to change your body, it's to change your attitude towards and expectations of yourself and your body.
- You've actually made good progress so far. Enjoy that and work towards replicating your results (while learning how to improve the process along the way).
- The scale is useful for observing trends over the long haul, but due to daily variations in body weight, it's unreliable. Don't stress about it so much. Use other factors, such as how tight/loose your clothing is, energy levels, ability to focus, and how much fun you're having with friends to assess how you're going. Much of this is subjective, but you can still give a lot of these issues a score from 1-10.
- If possible, replace rather than reduce.