She has a dog named Benji? Why not Lassie or Rin-Tin-Tin? Christ, how unoriginal.
 
There are all sorts of subtle and untracealbe tortures you can inflict on the old bat: itching powder in her bed, expired milk in a brand-new container for her cereal, ground-up niacin tablets in her tea (it'll give her hot flashes), epsom salts in her food (which will give her diarrhea). It's not nice, but it'll make you feel better about her visit. Don't hurt the dog, though... it's not his fault he's evil, it's hers. Dogs are products of their environments. However, if you have the opportunity to set up a situation in which Benji is likely to get out and run away, do it.
 
Your thumb will heal and your zit will pop (try taking a long hot bath). You don't have to answer the door when the Mormons knock (I never answer the door unless I can see your car and you're someone I know). Turn off the TV (commercial television is for suckers). And then find some dishes to break... it's very cathartic.
 
But in the meantime, have a good old gripe. I like it. A very old friend of mine (the friend is old, not the friendship, although I have known her quite a while) always says: "The more you complain, the longer God leaves you here."