If they had the exact address, why did they even care about Holly going to Vidalia? Heck, why were they tracking her phone? Wouldn't they have just expected the fugitives to be in Vidalia at the address on the blotter on the given date? I should probably stop trying to understand what they're doing.
I have a related question that's been bugging me since last week. In the real world, would they have been able to get the data on Holly's phone movements? Don't you need some kind of court order for that? At the time they got that info, there was nothing that suggested she was helping them, just a mention of her in his book written years ago.