When it comes to Erin's skill points, she has maximized the mechanical skill, and is well on the way towards maximizing the cleaning skill. She is mostly interested in Sports and Entertainment. Erin has the same facial structure as Vyn Goss. She can easily be cloned in Create a Sim with debugging mode on. Erin's turn ons/offs are randomized at the start of the game. It is only referenced in the game files that she has no turn ons/offs.
Do NOT attempt to add Erin to a household, make her selectable, turn her into a supernatural creature, or tamper with her in any way or form. Doing so will corrupt the neighborhood she is in.