Thanks for the clarifications...
Well, first of all, a newborn, at this age, should be getting more or less 60ml each time, on average. Some babies will take more, some less, it'll depend a lot on her weight when she was born, etc.
Producing milk is something not so consistent among mothers. My wife just produce enough milk after 5 days, some of my friends could not produce enought ever (and had very big babies).
One thing to observe is if the child is developing correctly, and eating enough. This site have some clues about it, the most relevant (I think) is how wet the nappies: does she produces about 8 wet nappies each day? Some heavier, some lighter?
Another think to consider is your alimentation: are you drinking enought water, teas? Liquids are important to produce milk.
And another point: don't expect to produce milk so easily, let's say. Human body is a strange thing, and in general you'll produce more milk as the baby drinks more, and even a crying baby is kind of stimulating to milk prodution (at least our doctor said). Also take care of your nipples, they'll become more sensitive, can even bleedy, as the baby learns to suck harder and grows up.
Finally, making the same movement with the mouth, even when not being feed, is normal, since it's one of the few movements she knows how to do (and keep practicing). And while being feed, she'll be tired too, so some times she'll take longer (and slower) to eat.
When she is hungry, she'll cry...