rolling, rolling, rolling

I don't have a recent picture of Ramona rolling, but lately she has become a real roller. She has been rolling from her back to her front for a good two months now. However, she would get stuck on her stomach, and need me to roll her back over to her back. Yesterday at Sabrina's house, she rolled over from her stomach to her back on her own. It was a bit of a struggle, I had to let her whine for quite a long time, without helping her, but she did it! Of course, immediately, she rolled back to her stomach. This may seem like a silly feat, but we are really excited, because we've been waiting for this for a long time. Its the little things. Now, we are going to be working on sitting up. She doesn't seem interested......but who knows.