Does Nygren know Holly?

In the Northwest Herald article about Monday night's single-vehicle crash on Route 176, Sheriff Keith Nygren is quoted as saying, "Front airbags deployed within the vehicle and Holly was found to have not been wearing her safety belt,"

He is referring to Holly Pfeil, 41, of Lake in the Hills. Usually, drivers are referred to by last name. How come Keith was on a familiar-name basis?

The press release referred to in the article is actually already on the sheriff's webpage and, indeed, it is phrased with "Holly" in the sentence about no safety belt.