For the record, LoTR is protected Intellectual Property, licensed to GW last I heard. So those minis are certainly not LoTR. Given that, I guess the mini is whomever you decide it should be and however you decide to paint it. The scale match to GW's minis is pretty much perfect.
Given you want more females, I suggest the Sorceress on Unicorn from the Bretonnian range. Clip the unicorn horn and you have another figure. Since there aren't many out there, I'm at a loss for where you'll find a third 10mm female that you could use in this case (dark elf chicks being unsuitable for this purpose). Any other females?
