Vitamin_F
I know you don't want to make her Overpowered, but can you make her learn enchanting for her weapons. Not overpowered, but enough to make her better than the other Hephaestus campers. This is to distinguish her from them as she doesn't have fire powers like Leo. Making her one of the few demigods that may or may not be in the seven that don't have cool powers.
Oh, what I meant is that she will never reach the level of beings like Chaos or Nyx, but she will most certainly be powerful. She will be a genuinely strong demigod (not with the raw power of ones like Percy and Jason), but stronger than the top tiers like Clarisse, by the time cannon arrives. Honestly, can't say anything else without giving spoilers, but she will be pretty powerful.