I am going to weaken my heroine, Kristen, to using only Water and Gravity abilities at maximum power. What do you think?

Now that I know the bots on Quora assume Kristen's water-only form can kill both Superman and Hulk, I see that I don't need her to be any stronger than she already is in base form. She has Gravity as a means of destroying and absorbing other Water Elementalists, and as a means of otherwise trapping some villains who are immune to water elementalist attacks.

I am going to weaken my heroine, Kristen, to using only Water and Gravity abilities at maximum power. What do you think?
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