It may be on the nose, but the dichotomy would be perfect. And speaking of powers supposedly not fitting their personalities, neither does Tiffany's if you pause for a moment and think about it. Tiffany is a cold manipulator who won't even look at you unless, like her, you also display a desire to pursue power and self-amelioration. Yet she's been granted light-based powers which for all her aggressive psychology influencing its development necessitates a reliance on others to be most effective in the form of support equipment and indirectly assists even her enemies by recharging their Monster Power. In contrast would be Claudia, a sweet woman who may be granted darkness-based powers. The powers stemming from the 7th's line we've seen so far have been primarily combat focused in utility, stripping others of their powers and being so effective even low Level superhumans sporting diluted genetics with fractions of 7th's lineage can effect Level 3s like the MC.Too on the nose, furthermore does not really fit Claudia personality and pigeonholes her further character development. Yes she wants to support her sister, but can grow to have a personality beyond that.
It may not supposedly match her personality, but it'd fit the juxtaposition between Tiffany and Claudia perfectly whilst also providing her some narrative wiggle room to become more than just the backup heiress there to help the real shining hope of Dexter's. Though if her psychology is suited for that is a whole other thing.