Infant to toddler?

I was on the phone with my Mother a few minutes ago when hubby starts waving his arm to get my attention. So, I walked over to the couch where he was sitting and saw Marley. She was standing with one hand on her push walker and the other hand on the couch. She took her hand off the couch and put it on the push walker and started walking!!!!! She was smiling and giggling then she fell. She got up brushed herself off and with out the help of the couch did it again. I stood there with my jaw to the floor which quickly turned to a huge smile. I am so proud of her. I just can't find the words to express my joy.