Well, honestly, I'm not too sure about the science behind it.
In vegetative growth, the plant will use more N than P and K. As a rule of thumb I've always been told to go with a ratio of 2:1:1. I'm guessing the reasoning behind this is that since the plant uses much more nitrogen, there may end up being a build up of P and K over time which may create a nutrient lockout.
If this is all you have for now, just keep giving it to her and find out yourself if it's good or not. You will most likely be fine feeding her this mix, but someday, if you decide to grow another plant, you may end up finding out that certain strains do not like the extra K at all.
The thing with growing Cannabis is that a lot of information out there is just plain wrong. The best way of going at it is to just do it and learn from past mistakes and successes.
I would say, just keep giving her what you've got, unless you have money to burn. If you want, you can PM me with updates on your plant whenever you feel something may be wrong. You can also just start a grow journal and we can help you diagnose your plants if problems arise. Don't worry about it, these plants can massive amounts of abuse if you have at least a little bit of knowledge by your side.
Again, if something looks off, post some pictures. If no one answers in a timely fashion, just PM me and I'll try to help ASAP.
EDIT:
I've just noticed that your leaves are all 3-bladed. Has it gone into flowering and reverted back to veg?