To preface: the Hannya mask is a paradox, it is often both positively and negatively associated. This duality means that it can be seen as a good luck totem, but also as evil itself. Another example: a Hannya tattoo can symbolize Prajñā/enlightenment—which transcends the "mundane" mind and talks of awareness and your higher self, but conversely, it can also symbolize "earthly" (aka mundane) human emotions and the lack of discipline to control or release them (jealousy, rage, wrath etc.) The complete opposite of enlightenment.
So to answer your question, it can simply mean either or even both. Yes, it can be seen as bad thing, because it's a lucky totem that broke. Yes, it can be good too, because it shows wisdom over a complex emotion.
My article highlights the many variations and interpretations of the meaning of a Hannya tattoo, however, a tattoo is ultimately, a very personal thing. It's up to you to apply what resonates with your heart the most, I really hope that helped you decide!