Destruction of a Young Lady?

Scott and Tanya say they've witnessed a "complete destruction of a young lady," referring to their 19-year-old daughter, Courtney. They claim she's been completely brainwashed and manipulated by her 18-year-old boyfriend, who they claim has bad intentions. Courtney says this is absolutely not true and claims that her parents have done everything they can to invade her privacy, including tracking her phone, reading her text messages, eavesdropping on security cameras, and even flying halfway across the country while she was spending time with her boyfriend! Courtney says she wants her parents to trust her judgment, but her parents say they have genuine reasons for being concerned.