Hi there Jakindra - this looks like a good strong vein to investigate for a project
Do you have any ideas which other fantasy authors are you going to use? I run a forum that has a Tolkien roleplay section and his Middle Earth stories are worth looking at on this subject, especially in the case of The Return of the King. This has Eowyn of Rohan disguising herself as a Rider (Dernhelm) to go to Gondor where she fulfils a 'prophecy' made by Glorfindel of Gondolin that 'no man' could kill the chief of the Ringwraiths...
Much debate there for the lorists as there is a school of thought there that it was in fact a hobbit
who struck the fatal blow (Merry using a sword made by the men of Westernesse) but Eowyn certainly finished him off
Tolkien's an interesting author in that he didn't feature too many human women in his other writing and his elven women were few and far between. Those he did flesh out, especially Galadriel (of whom he said that she was equal in talent and power to Feanor who he said was the most gifted of all the elven race), but also Idril Celebrindal and Luthien Tinuviel who was half elven, half maian (a powerful spirit like Gandalf or Saruman before he fell) and her grandaughter Elwing (Elrond's mum).
Being born at the end of the Victorian era, Tolkien didn't let his main female characters do too much in the way of the warrior but he took a kind of pre-Raphaelite attitude with Idril and Elwing as being wise, inspirational and brave in being helpmates to their menfolk and certainly Luthien and to a lesser extent Galadriel had some martial and political clout as they were both sorceresses, but Luthien again was the greater protagonist and out-magicked both Sauron and Morgoth.
There are 2 other human women that took an 'equal' role to males. The first being Andreth who dedazzled Finrod Felegund, one of the most powerful elves to return to Middle Earth, with her wisdom and philosophic resistance to his physical love - they were cerebral but platonic lovers and in a literary sense Tolkien's reasoning out of why humans and elves don't mix and starting a stream of ill-fated human/elf liasons of which both Aragorn and Elronds were products.
The other human female Tolkien wrote of was a bona fide
warrior queen - Haleth of Brethil (just to the north of Doriath and an ally of Finrod and of King Thingol). Her father and brother were slain by orcs and so she led her people to safety and the alliance with the elves but they had to fight their way through their retreat and she was right there with the other men and more than holding her own as a soldier and a general/strategist and Battle Champion. Her people were blessed by the Valar and went on to found Westernesse with other favoured tribes of men when Morgoth was defeated.
A few ideas for you there anyway!