She wasn't that bad at all. We had been playing for about an hour and she got VERY over stimulated. I couldn't calm her down and she started running and attacking my fingers like one of her toys. I put her in her 4 x 4 playpen with all of her toys, her food and water and her crate in the corner with the door open. I sat a few feet away in my office chair at the computer working. She was very mad that I wouldn't let her out to play with me.
She howled for about 2 minutes and then suddenly dropped to the floor and slept for 2 hours.