They're from some old Knights Kingdom II sets.
Nicely done! I really love your use of the blue Carapar shells (may I assume they're bootleg?) And I love how you've incorporated more trans blue into the build.
Did you ever try making her color scheme just regular (Mata) blue and trans blue? I feel like she might be a bit cohesive without the light blue.
Also, while I love how you were able to incorporate the blue crossbows, they don't really mesh with the rounded aesthetic of the mask, thighs and CCBS shells used throughout.