In an exclusive interview with ABC News, Shellie Zimmerman said she was staying elsewhere the night Trayvon died, because the couple had gotten into an argument the night before.
She said the last year's struggles, including a year in hiding before the trial, have strained her relationship with George Zimmerman further.
"I think we have been pretty much like gypsies. ... We've lived in a 20-foot trailer in the woods, scared every night that someone was going to find us and that we'd be out in the woods alone and that it would be horrific," she said.
Shellie Zimmerman would not comment on whether her husband had a temper, and said she believes his self-defense stance.
Shellie Zimmerman pleaded guilty to perjury Wednesday for lying about the couple's finances during her husband's bond hearing.
She would not say whether she was pressured to lie, ABC News said, but said she felt alone in the courtroom without him.
Shellie Zimmerman faces 100 hours of community service and one year probation for perjury, ABC News reported.