[quote=A Rainmaker]
She can always steal a voice at some point, which will be fun to bring about. I don't see her being particularly powerful, since her initial power resided in her voice and without that she'll be a lesser witch, especially since otherwise she's not a strong, natural-born witch but is rather driven more by determination. Perhaps start her out fairly weak and have her progress, but at her peak I don't think I'd want anything especially powerful. 1-10, peaking at maybe 7?
[/quote]

Maybe she can...steal voices of people by killing them, but it only lasts temporarily? Or, perhaps, she regained her ability to speak...but much like the nymph Echo, can only repeat word that have already been spoken out loud?