Continuity: When Sherry visits her parole officer at the start of the movie she states that her brother lives at 1334 Ridge Street. At the end of the movie, after Sherry drops Lexie off, the number on the post outside her brother's house clearly reads "1642."
Audio/visual unsynchronized: When Sherry and her daughter are sitting under the bed after the family ate, her daughter tells her something and when Sherry replies, you hear her say "I thought so", but her lips are saying something else.