I'd go with, you can feel a raging ocean of anger calling in fury for the destruction of the absolute just under the surface of her placed obedient mind, if set free what damage might her vengeance wreak against our enemy or something rather than noble warrior?

Minthara is the best character and she NEEDS to be recruitable if you side with the grove!
Also- I support the important thread in the suggestions: Let everyone in the Party Speak