is my dog mad at me?

Yes it's true. Our dog also have feelings like the one you're talking about. i read in a magazine that dogs chew because they feel anxious and left out. The cure to it's "destroying" behavior would be putting them in a cage. I don't really know if it's effective because we're doing it to our dog but she also keeps on biting boxes and especially slippers.

She's not mad at you, she's afraid of you! She doesn't know when you are going to scold her or why! She's not sure of her greeting! The reason she's chewing your things and not your sisters is because those things carry your scent! She may have seperation anxiety and chewing on your scent is a comfort to her. Smacking a dog is always wrong, it doesn't mean anything but pain to them. Hitting her with a slipper is even worse! She know associates them with pain. She may even be trying to kill it! Scolding them for something they may have done even a few minutes ago is wrong! They think they are being punished for the action they are in the middle of. If that action is coming to greet you and you then hit them or shout aggressively they soon are too scared to approach you. She should be somewhere where she can't reach your things and can only get to toys she can safely chew without supervision! If she's little it should be a crate or a small area with her bed in. She wont see it as confinement but as her den if you encourage her to use it. If it's a larger dog put her in a larger area or a room like the kitchen, making sure there's nothing she can reach. You need to learn how to train your dog and that's done with love and kindness not by violence!

One time, my dog made me really mad... can't remember why... I lost my temper and I went to hit his side (I really try never to hit him, so I felt really bad after :X), but he moved, so I accidentally hit his head. He didn't look at me for hours... and it wasn't that he couldn't, because he was looking at everything else normally. He was pretty upset with me, for hitting him :(