As far as Adalind getting her powers back, it had been mentioned a few times. Even Adalind is afraid of it happening. She told Rosalie that she didn't want to be a hexenbeast anymore. Rosalie said they "should wait and see..." However, doesn't the blood of a Grimm make a Hexenbeast lose its powers? Isn't that what happened originally with Adalind when Nick bit her? They spent a whole season on her going to Romania to find a witch to help her get her powers back...
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