Harmony quickly regretted this decision after recognizing Spike's renewed campaign against the Slayer, and even chased him out of her lair with a stake when he desperately sought her help.
Spike's ambition to kill the Slayer apparently rubbed off.
After Cordelia and Xander's breakup, Harmony cruelly tricked Cordelia into thinking that she has been re-admitted into the clique, only to humiliate and reject her.
She tried also to became friend with the new student, Anya Jenkins.
Several years later, Harmony tried to make a life for herself in Los Angeles.