UPDATE:
I had a great time with my niece, although I was unable to go out due to the car getting stuck in the driveway. We had a lot of fun, having a tea-party, coloring and playing an alphabet game on the computer.
In fact there are two cars stuck in the ice in the driveway, one in front of the other. My dad worked on it for over half an hour, and then gave up. My mom got home a right after he gave up, so I am no longer on duty. We found someone to give my sister and BIL a ride home.