McGriff claims that she had seen a broken window, and felt that it was her Christian duty to protect all that fine Santa-loot. (She calls it poor judgment, which nobody can deny). The police say that she kicked and scratched them during the arrest, not to mention slipping two sets of handcuffs. (Also, in our limited experience, signs of poor judgment).
McGriff's church, by the way, is called the Church of the Living God. This may confuse some googlers, since there is another CLG founded by her late brother-in-law, the late Larry McGriff.