Looking back over your grow I'm gonna guess that your girl got 'stunted' when you transplanted her. This is common for many auto flower plants, and many people recommend starting the seed in the final container and not bother with transplanting. Personally I germinate in a wet paper towel and then put the seed directly into my 5 gallon soil container.
You also appear to be using a perlite/vermiculite mix for soil, in the hempy grow style? But the last set of pictures looks like soil mix? I am intrigued as I'm looking to move into Hempy growing.
But if this is the case, then you most certainly will need to provide the base nutrients to the roots through the fertilizer in your water. It's very much like hydro, so the water must be fresh and contain all the food your plant wants.
Here's a link to the

feed schedule, the supplements are listed at the bottom:
http://foxfarmfertilizer.com/images/pdf/SoilENG-Q2.pdf
Beastie Bloomz (0-50-30) contains no Nitrogen, whereas Cha Ching (9-50-10) has some N to keep things green at the end. Neither are meant to be used by themselves. They are meant to be used in conjunction with Grow Big/Big Bloom/Tiger Bloom or similar product line from another company. You may not be getting the 'base nutrients' you need for a healthy grow.
My impression is that you only have BB and CC available right now. If that's the case I'd just stick with the Cha-Ching until done. But really you don't need either product, a standard bloom fertilizer like Tiger Bloom (2-8-4) should be sufficient when used with Big Bloom:
http://foxfarmfertilizer.com/index.php/item/tiger-bloom-liquid-plant-food.html
http://foxfarmfertilizer.com/index.php/item/big-bloom-liquid-plant-food.html
Anyway dude your little girl looks ok, so for your first time I think you are doing pretty good there! If you can keep her healthy for a couple more weeks I think you'll get a couple of decent buds off her.

:smoke: