Sorry, one more point I should have made above: I'm not a fan of calorie counting for the very reason you're struggling. You seem to be stating: "I'm only eating 700 calories a day, why am I not losing?"
As I mentioned, we all are horrible at knowing how many calories we're really consuming. The issue is actually even bigger than that. Remember, you have to eat less than you burn to lose weight. Since you most likely are overestimating your intake (we all do it), that's an obvious issue. The EVEN BIGGER ISSUE is that you only have one side of the equation. You have a rough idea of intake (even if you measure poorly), but actually have no idea whatsoever know how many calories you really burn per day. There is no reliable way to measure that unless you have a rather expensive metabolic test done. Sure, there are online calculators, but these are only good at determining rough amounts and they can be off by hundreds of calories per day.
I won't lie. As a person of small stature, you have it a lot harder than most because the margins for error will be smaller. What I mean is that we know you personally need fewer calories per day just based on your height. Beyond that, it also means the number of calories you have to "play with" are also a lot less than a taller person would have.
Let's look at a couple of examples to illustrate this point:
Person A needs 2500 calories to maintain their current weight. This means they can cut their calories down to 1000 and all other things being equal, they can in theory lose ~3 pounds of fat a week.
Person B only needs 1200 calories to maintain their current weight. They obviously don't have the "room" to cut by 1500 calories a day, and even 1000 is unrealistic, so they'd have to reduce by 500 at most, taking them to around 700 calories a day. This person will only lose about a pound of fat a week, even though they are eating less calories per week than person A.
It seems unfair, but it is what it is. Person B is going to have a harder time being compliant with dieting (since they have to eat so little food), and is also going to lose a lot slower.
Guess which one you are?