Excellent, as always! Those printed pieces are sick, and the Miru is a good choice of Kanohi (although I do think you're right about it not being as suited to Water Toa--there is something very masculine about it, perhaps the expression). The sparse use of trans-light blue is also very effective--it makes me think of those parts being charged by her Elemental Power. The legs are unusual, but they are well-covered, so that's good. I also like the fingers quite a bit, as they match well with the very mechanical, greebly aesthetic you utilize in the rest of the MOC.
My only suggestion (in terms of the current, longer torso) would be to replace one of these TECHNIC bushings in the waist area:
with something like one of these:
That way, you could cover up the lower body with an armor piece, just so it doesn't look as bare as it does right now...
Wonderful work, as always!