Honestly, the character you're describing to me sounds very underpowered (maybe that's just me).
Also, in my opinion, from a playing-a-roleplay perspective, why have a power if your character will never use it? 

Just some feedback. Like I said, I'm really interested in your character, and if you choose to take her in a completely different way, or draft a completely new character, good on you! 

:^)