I would recommend she contact the local chamber of commerce, and their tourist officer. This is a great way to get information and special deals. The chamber will probably know a lot of the discounts, offers, and deals which are available that agents will not know. At the very least, they will direct you where you need to go.
Don't forget, you can contact the hotels directly. This is another way to get a great deal, especially during the off-season. You can make a deal, or explain your situation. They will want to fill up their hotel as best they can, and might be willing to do a reduced rate for an extended stay, especially for a honeymoon.