The third point of view:
"What?!" Isabella was stunned out of her mind and apparently, she wasn't the only one startled as well since the others had similar shocked expressions. Like who does that? Put a tracker on their kid.
Isabella's mind began to function a mile per minute as she assessed her brain. When had Niklaus put a tracker in her? When was the last time she had a dental appointment? How hasn't she noticed? She couldn't remember having dental surgery? It seems her father was always one step ahead of her.
"Of course, I'm pulling your leg," Niklaus smiled at her and for once, Isabella pulled a relived breath, her heart pounding against her chest. That wasn't funny one bit.
But was that really a joke? She couldn't help but wonder. Niklaus was a nut job, it wouldn't startle her if he really went through it. Seems she had no choice but to check it when she returns. It always pays to be careful.