dropping things

We played a game today: drop the coasters from the sofa. She loved it. She held each coaster over the edge and dropped it; then she'd drop the coaster holder. This went on for quite some time. then she crawled to the other end of the sofa to get the phone. but she fell off the sofa and cried. I will have to watch her for signs of trauma and I'm so upset with myself for letting that happen to her while I was right there! It was so quick.