6 months old and crawling?!

Well, Esme turned 6 months old on Friday. I am still wondering where the time has disappeared to! She is such a gorgeous little girl, a real little socialite! She always has lots of smiles for everyone and is very chatty. She is happy to spend lots of time on the floor exploring everything. I can't believe she is kind of crawling already though! She has been getting up on her hands and knees for at least a month now and now can move forwards by getting up on hands and knees and 'lurching' forwards or by pulling herself along 'commando style'. She can move fairly quickly, but it usually takes something, such as Jacob's toys, to motivate her to get moving. Esme just adores Jacob and Jacob is so good with his little sister too although I don't know how much he is appreciating her 'playing' with his toys!! I'm constantly amazed watching Esme play and explore. She knows exactly what she wants and is so accurate with grabbing whatever it is that she wants. I'm sure Jacob was never like this! She usually prefers to play with everything that is NOT a toy though. She loves to pull herself up to the toy drawers and pull the labels off them, eat paper and play with shoes/chair legs and so on! She is trying to sit up from being on her tummy already. I keep trying to tell her that she needs to be able to keep her balance sitting up before doing this but she doesn't listen! She often ends up toppling over onto her back because she can't balance herself. I don't imagine it will be much longer till she is really on the move and into everything! I'm not so sure I'm ready for that!!!