She wouldn't get any favor.  There is pretty much no warm relationship between those 2 offices.  This is simply one of those cases where the Postal Inspectors pushed to have the case prosecuted as a federal crime, and they don't get a lot of cases prosecuted.  Child porn used to be a big area of investigation for them, but very little such material travels by mail anymore.  All these agencies have "stat" counters, and getting federal cases prosecuted is meaningful for smaller agencies in terms of their budgets.  Rarely are there actual arrests made in a mail theft case, and here the Chief claimed there was video of the crime,  as well as a supposed motive by the suspect.  I'm sure the Chief and his wife never expected it to end up in federal court -- completely out of their control.  I'm guessing they never imagined that the Postal Inspectors would jump in on the basis that interference with the US Mail was involved.