Well, she took her first steps. Of course, we're excited, but at the same time we know it will be that much harder to keep track of her now.
There have been three jumps in mobility now. First, she went from laying still to rolling over, but she was still pretty slow. Then she went from rolling over to crawling and if you left a door open she would bolt for it. Now she is making the jump from crawling to walking and if you blink, you will miss her going from playing with toys in one room to pulling books off the shelf in another room!
For now, excitement is the dominating emotion, but pretty soon we may need a leash in order to keep ourselves sane (and her safe).