20She Is Not "Crazy"
It would be easy to point the finger at Bellatrix and say that she is the craziest witch in the Harry Potter universe. She has given more than enough reasons for everyone to think so. However, what makes her even more dangerous is that she knew exactly what she was
doing the entire time.
When Voldemort employed Bellatrix as his right-hand woman, he made an excellent choice. Bellatrix fully believes Voldemort's ideologies, and will do anything to ensure that his vision is carried out. She has done some unspeakable things, but it cannot be blamed on mental illness. She willingly participated in these acts, and would do it again if given the opportunity. Bellatrix did not need an excuse; she would have followed Voldemort through anything.