If you know Zoe then you know she doesn't trust much. She's naturally suspicious and acts like she may be attacked at any time. It's pretty funny sometimes when she walks into the bedroom and scouts out the room like there could be an attacker hiding in the shadows. God forbid if there's a sock on the floor!
She just got done checking out the penny on the rug, that's how suspicious of everything she is. I love how she stands! Her body language here pretty much says it all.