it is hard when they start walking and the floor is hard. I remember when my 2nd child was walking and we had ceramic tiles it was a nightmare, I was constantly panicking. She will be steady on her feet before you know it though and this time will pass. Try letting her practice walking on grass where she can fall as much as she needs to and in a week or so she will hardly be falling at all (or will have at least perfected falling onto her bum!)