My first experience cheating [mf]

I love being a dog walker.  No day is ever the same. This was by far one of my most wild. I do individual visits, and about 1/4 of the time my clients are home. I have keys to their houses and just let myself in and out. They are scheduled times so the client always knows when I’ll be arriving. 

 After I finish my 9:30 appointment I check my social media. I see this next client, Abby, post something at home. Being introverted, it’s actually nice to know they’re home rather than be startled sometimes.  It’s also nice for the client to have a heads up, so i text her. 
“Hey, i’m omw.” 

“Ok!”

  I use my key and expect to say hi knowing she’s home. I walk in and rather than their dog running to greet me I’m met with an empty house. Odd. Maybe she left in the 5-10 minutes it took me to drive over? I call for the dog, still no sign of him. More odd. Check all his favorite spots. Offer a treat. Still nothing.