I love what you've done with the theme. Taking the two concepts of strength and intelligence and making them different aspects of the same character is a great way to play the two ideas off against each other. I love too how you've made Lyra's downfall the toxic machismo that's often mistaken for or thought necessary to real strength, that's also a great angle to take - overall it's a good twist on the theme and a thoughtful exploration of some important ideas.
I think in future you might be well-advised to take into consideration the limitations of the format you're using. 1000 words isn't a lot when you get down to it, and you went with a very broad-strokes overview of Lyra's career. The story might have been more engaging and captivating if you chose instead to really get into Lyra's head during a single pivotal event - such as the final battle where she realizes the extent of her own weaknesses. That could make a really powerful character piece that still addresses the themes and ideas you're exploring.
I did enjoy the piece, and I really did like the angle you took on the theme. Thank you!