What is she getting for light and nutrients? During The first 5-7 days of the plants life, most of the growth is under the soil, as she is establishing a deep root system in order to collect more nutrients. But by now she should be working on her 3rd set of leaves. The fist 2 sets well defined by now. She should be getting atleast 16 hours of direct sun light, and be fed about 200 PPM of growth nutrients. Take a look at my 9 week old tangie matic at week 2. This is also a sativa, so you can see where she should be. Currently, your watering should be very little, and every other day. Watering around the plant, an inch away, to encourage her roots to grow out in search of water and food.