Many moons ago, I had a boyfriend who I suspected was cheating. About 2am one night, I get a text saying he was still with his friends. My gut said nah.
So I drove to his home, parked up the street, and walked right up to his open front door. I stood outside of it and listens to him and a woman laughing and talking. I walked around to the kitchen and was able to see into the house. I walked around to the back where his room mates dog was. He didn't bark because he knew me. I got a good look at the girl. I saw them kissing. I creeped around for at least 20 minutes, then I left. Broke up with him the next day.
My point is, sometimes you can creep around a person's home and people would never know. Especially if you are familiar with the pets. With that being said, I think it's very highly unlikely she was kidnapped. I really think Candus did something to her.
P.S. I was a young dumb 20 yr old when I creeped around that guys house. I'm 41 now and wouldn't dream of doing something so invasive, no matter the context.