The described kind of person, has often a hard core inside that soft personality that everyone can see. That core is made by years of pain and suffering in a hellish environment. Not all people make it, out of there, in time. Sometimes it's a monster armed with sharp teeth and blades all over it's body, indestructible and covered in what only looks like that very sweet person that was very strong inside, but is only skin and bones now. And often, it doesn't even know it yet, it harms others on it's search for warmth. On realization it may suffer even more or like the taste of others suffering. This may not always have a happy end.