maybe it's because i don't shut up and constantly talk to her and read to her or have music playing etc

I hope for DP's sake DD2 is no where near as much of a chatter box... he wont know where to turn..
lol that's what everyone said to me when I had a 12monther who could count to 10 and then an 18monther who could recite the alphabet.....on the flipside DS is the silent assassin...he hardly says anything and i still talk a lot.