As a rapidly growing kitty, she needs to eat quite a bit, but doesn't yet have a very big stomach, so it's lots of little meals. You don't yet have to worry too much about over-feeding at this point, so definitely err on the side of feeding more as opposed to less. Leaving down dry food is ok, and at this age it's useful so she can graze throughout the day, but keep in mind that the longer it's in the dish, the less desirable it becomes (with regards to their being "left over" in the morning next time you feed her).
You should probably at least consider feeding more wet food as well, to supplement the dry (or better yet, have the dry supplement the wet food). Wet food is better for her overall, as it has the moisture she needs in it, and is higher percentage of meat and less filler than dry.
http://www.littlebigcat.com/nutrition/w ... -and-dogs/http://www.littlebigcat.com/nutrition/s ... -pet-food/When your cat gets closer to one year, then you'll need to start worrying about feeding the right amount so as to maintain a healthy weight, but by then you should have a good feel for how much she is eating, and how she is doing weight & body-shape-wise. Your vet will be able to give you feedback on that as well when you take her in for routine visits.