Couple that with the fact that she only seems to play self-confident women
I'm having a hard time imagining a role for which a Doll would be programmed to be anything *but* self-confident.
The role Sierra had to play wasn't particularly the role model of self-confidence.
I kept expecting Sierra to suddenly "activate" and become super-bodyguard-defender chick. She was sent in as "backup" after all, right? So there must have been some contingency plan for Sierra to suddenly switch-on and protect the client.
Loved her Australian accent! Yow!