Grimm Speculation

There is that mysterious piece of wood that was found buried, and is being kept "under wraps" in a secret place in the tunnel. I didn't catch them giving it a name(unless I missed that detail being said). They discovered it had healing properties. Ok. But what's it good for? And what is it?

My notion is it is supposed to be a piece of the "true cross" sought as a religious relic by Christian pilgrims, Knights Templar, and other Christian seekers in earlier centuries. Legend is it had healing properties. Ok. But why on Grimm?

My speculation is that given the healing aspects of this unnamed piece of wood, and given there are not one but two female hexenbiest love interests (present - Adaline and past - Eve/Juliette) who might find those healing properties valuable for their own "conditions" - that piece of wood will maybe be used to rescue Adaline, healing her from her unwanted hexenbiest status' return.

In short, using that wooden stick, I'm wondering if Adaline will be saved from fully "turning back" to what she loathes so she and Nick and Kelly can form a stable Grimm family unit. More or less.

I'd like that, because I like Adaline as a character and as Nick's love interest - far more than I did Juliette and Nick before she became Eve.