Erin is a vampire after being turned on her own request. As a vampire she has been able to expand her knowledge much more. She is turned by Skye Moreno.
Erin grew up in a loving family with very loving parents. When she was 9, she broke the code of the safe and she found her fathers (a police cop) gun. Her parents began fighting about her intelligence and while her mother accepted her brilliance, her father struggled with it. The family took to a camping trip, where her father died falling off a clif. Erin had noticed the dangers in the cliff, but she hadn't warned her father and let him fall to his death as a consequence.
When she was 11, her mother was so addicted to alcohol that Erin got send to her aunt. However she never made it there, and she ran away to find a better life for herself. When she was 14 she ended up in juvie for breaking into a secret facility. When she came out at the age of 18, Erin got hired to go and work for The Anconi. From the age of 18 to 26 she lived in Greece as a computer expert to code and decode the Anconi's communication system.
At the age of 26, when she had completely decrypted the harddrive, she left in the chaos of a virus she had created with a harddrive that contained valuable information on the Anconi. She goes to The Independent Vampires where she hides for the Anconi, and waits for about a year untill it's safe for her to move on and be on her own. During that time, she meets and starts a relationship with Julian Price. She breaks off the relationships and leaves New Orleans when she finds out he's also in a relationship with his own sister.
She arrived in Waterfall Creek as a socialite which is a cover she used for a little over a month untill she had uncovered the ways of The Millers 2.0 and their allies. She shows up at the front gate of the motel saying she has intel. She request to talk to Scott Hayes, saying only he would understand her actions. When Scott tells Jason and Alyssa that Erin single-handedly took down the Anconi's mainframe, Erin is welcomed into the Motel. She looks behind her as the gates of the motel remain open, and she touches her 'freedom' tattoo on her wrist.
The following day, she is ready to hand over the flashdrive when she spots Jade on the picture on Alyssa's desk. This causes Erin to retrieve the flashdrive. Jade then steps in and assures Erin that she is not a treat.