ROTTERDAM JUNCTION — Kiersten Marcil, of Rotterdam Junction, officially released her debut novel in February. On Saturday, she celebrated the book’s first few months with a launch party at local historic site, Mabee Farm. The historic farm was the perfect spot, as the novel, titled “Witness to the Revolution,” takes place in Orange County, New York, during the American Revolution and touches on local lore, mentioning people like Philip Schuyler and places like Albany.The novel centers around Savannah Moore, a modern woman who is transported back to the 18th century, where she meets Captain Johnathan Wythe, who has his own host…