I knew she could channel the One Power, but I just don't remember her using the True Source (which is not the One Power correct?) the True Source is different than the One Power and undetectable/more powerful.
Wait what am I thinking of? There is Male half of the Source, Female half of the...
I didn't even know Nynaeve took hold of the True Source ever in the entire series... yikes, I really need to do my reread soon. It has been far too many years.