Vengeance is empty, Callisto. It will not bring them back to you.

[ This is something she learned herself, and it is why Lexa has never sought revenge, even when it is something she deeply desired. She did get satisfaction in murdering the woman who killed her Costia, but she did it only when it coincided with a logical reason too.]

Only you can put yourself back together. You'll have to because you can't find your vengeance here. And you must carry on.