Law enforcement computers have strict security measures to prevent unauthorized use. Jamie would be required to completely log off before walking away from the computer, especially one used by multiple users. Only the department IT techs should be able to access Jamie's search history. Also, it is highly unlikely that Jamie would have the username of JReagan when his brother Joe was a cop before he was.
When the character of Milli collapses, Linda checks her breathing and while her head is down by her face, Milli blinks.
At the fashion show, Linda Reagan's sister, Wendy Lightner, introduced model and TV star, Millie to Erin Reagan-Boyle, and Nicky Boyle, calling them "my sister-in-law and niece". She's not related to the Reagans by marriage.