The bank which is robbed in the episode is referred to by the district attorney as the Maricopa National Bank. However, in the show, Maricopa County is actually called Mariposa County. It therefore stands to reason that the term "Maricopa" would not exist for a bank to be named after it.
It is never explained why Ruth Boddicker claimed to have dreamed about the bank robbery in advance. Since she planned to profit from the robbery, such claims only brought undue attention from the bank, the police, the media, and ultimately, the robbers. We know it wasn't to establish herself as a medium like Allison Dubois, either, since she shied away from the attention it brought.