It was really no choice at all. Tyson was intelligent, ruthless, and dangerous. Tamara was a lost soul with an artist's heart.
Eve had been reborn with a burning desire to replace humanity with something greater - and instilled with the zeal and limitless energy to do whatever it takes to carry out that end. The key was creating something greater. Tyson was a weapon, focused and dangerous. Tamara was a rare creative talent, her ad-libbed music bordering on genius. Before she was broken by her addiction, she represented all that was essential to preserve from humanity. Tyson represented it's worst failings.
Eve got up and made her way to the diner's restroom. Once there she reached out and put a compulsion in Tamara's mind.
The drug addicted girl walked in to the bathroom, her mind not reacting to Eve standing against the back wall. Tamara went to the mirror and fussed slightly with her hair.
Eve moved forward, her psionics removing her presence from Tamara's mind. The alien creature paused for a moment, she debated saying any last words. No, no point. The girl would be shedding her memories and prior allegiances is a few seconds anyway.
Eve's entire neck swelled abruptly, ballooning to triple it's normal thickness. Her tongue shot out, and the barb in the underside of the tip pierced into the base of Tamara's skull.
Throbbing with Eve's heart, her neck slowly contracted, pushing the transformative venom directly into her victim's brain. Quickly the blood-brain barrier dissolved, allowing the excess fluid to circulate throughout Tamara's body.
The worry lines of Tamara's faded, as her skin lightened. Eve reached out and caught the girl as her legs buckled. Inside her mind Tamara felt a strange sense of relief as her memories boiled away. The shame of her wasted potential and her fall from grace vanished as her past faded into the mental fog. Her last conscious thought before her mind went dormant was that she could finally hear the music again.
Tamara's hair fell to the floor still bound together by the scrunchy and ponytail. Her face was now anonymous and alabaster white, her body also quickly fading into a blank androgynous state.
Eve's enjoyment of the spectacle was interrupted by Tyson pounding on the ladies room door.