"I didn't do anything wrong," Neiers, 18, tells E! News. "I thought we were going to trial and we had a great shot at this. I had been so confident because I had thought up until this point that I didn't do anything wrong."
In a last-minute plea bargain Monday, Neiers accepted a six-month jail term and three years probation for what her attorney Jeffery Rubenstein called "a limited role" in the caper. Rubenstein has said the plea was due in large part to Bloom's willingness to testify.
Neiers was seen on surveillance video as one of four people entering Bloom's Hollywood Hills home last July, but she previously insisted she was drunk at the time and was unaware that she was involved in a break-in. She begins her jail term on June 24.
"You go into this thinking, 'I may only serve 30 percent of the time,' or whatever, but I could end up serving a full six months. I want to prepare myself mentally as best as I can. I'm going to walk into that courtroom with my head held high and do the right thing."
Over a half-million dollars in artwork, watches and other valuables were stolen from the actor, allegedly by a ring of teenage burglars who committed a year-long crime spree that raided the homes of Paris Hilton, Lindsay Lohan, Rachel Bilson and other young celebrities that netted more than $3 million in luxury goods.
Five other defendants separately face a variety of felony charges in the ongoing case.