> It took someone more level headed to start telling her when her reactions were not valid to certain situations to begin stabilizing the behavior.

I guess at the risk of splitting hairs, I think it's more likely they stopped misappropriating more than they started invalidating. I see a difference between "you shouldn't feel that way" and "I disagree with that conclusion" such that one can logically say both (well, the former being "it's okay to feel that way") in the same breath.