The phrase you are referring to is "She made her plans meticulously and in secret." The word "meticulous" means to show great attention to detail and to be very careful and accurate. In this case, the character in question is making very detailed, precise plans to ensure accuracy and effectiveness. I hope that this answer helps.
academic discourse, which requires argumentation and debate. Argumentation and debate inevitably lend themselves to flawed reasoning and rhetorical errors. Many of these errors are considered logical fallacies.