THE family of a teenager murdered while walking her dog on a nature trail believe she may have known her killer. Police said Michigan schoolgirl April Millsap, 14, texted her boyfriend “OMG ... I think I’m being kidnapped” to her boyfriend just before her death. A couple walking the well-known Macomb Nature Trail in Armada, just north of Detroit, found April’s body last Thursday night. Her dog Penny was standing guard. It later emerged the dog had repeatedly approached other hikers before successfully leading the couple to her body.