A freelance photographer has pleaded not guilty to charges that she attempted to kill a housemate at her Inverness Park home. Marin Sheriff’s Office officials said 26-year-old Kelsey Winterkorn beat Sasan Dresden with a bat as he slept on the morning of March 11 and then repeatedly crashed her van into Mr. Dresden’s vehicle on Sir Francis Drake Boulevard while he sought medical attention. Ms. Winterkorn was a conspicuous, if short-term, local presence because of…