My son started to walk at 8 1/2 months. It seemed prior to that he did the same thing you describe your daughter doing. Pulling up, falling, or not noticing something above him so as to not hit his head. Once he could walk, he started to walk into walls and tables and anything stationary in his way. He just never stopped unless I stepped in front of him. It really freaked me out! I took him to the doctor to find out if he had vision problems or motor issues. He assured me he was fine. You see, babies don't typically walk that early. Usually, they're crawling at 7- 8 months, pulling up at 8 to 10 months, cruzing furniture at 10 to 12 months and then walking. He said the brain of an 8 month old hasn't yet develop the nerve pathways to get the message, "in comming" to the brain in time to stop before running into a wall. The speed of the visual information comes in faster than the brain can peocess it and send the information to the legs saying "stop walking before you run into the wall". Or "watch out, you're going to hit your head". He assured me that within 2 to 4 weeks, he would stop in time and not run into the wall. It only took 3 but it seemed like forever! Yes, they do make helments for babies, an if you're really worried, go and get reassured like I did from the doctor. Meanwhile, hope she doesn't walk earily, cuz by 12 months, my boy needed a leash!!! He was still too young to process running!! LOL Good luck!