"Also, how can a woman who isn't a cliche "Soviet Wife" move in such armor for a while, much less fight even that one sided battle?"
Well, for starters, real plate armor is nowhere near as heavy as it is often portrayed in schlocky fantasy art. A complete suit of plate armour made from well-tempered steel would weigh around 15–25 kg(33-55 pounds), which isn't very much! It's actually significantly less weight than the full equipment a modern soldier is expected to carry into battle. Plus, it is spread evenly across the body, instead of awkwardly focused on certain parts of the body(like, for example, a backpack full of gear), which makes movement more easy. Remember, the people who actually historically fought in plate armor would require a great deal of mobility compared to the modern day wherein virtually all combat is done at range-it doesn't make sense to assume that armor would heavily restrict movement.
www.youtube.com/watch?v=qzTwBQ…www.youtube.com/watch?v=5hlIUr…So the answer is 'by being a fighter, male or female, who has any level of training/competency upon the battlefield at all, because moving in plate armor is actually not very physically strenuous in the first place, and a normal person can do it fairly well'.
Your other nitpicks are missing the main point of this piece in a bunch of minutia about a hypothetical that no one but you raised-that main point being, of course, that someone wearing armor is going to be far more effective in combat than someone without. Also, if you had done any research you would know that history is full of women who rode into combat in armor, so your last comment is as inaccurate as it is sexist.