Both of mine were very early talkers (they needed to keep up with their mumma!). I don't remember the exact age, but by 12 months they were both giving a variation of 'wub oo', although only in response to my 'I love you'. Can't remember when it happened unprompted?? Now they both tell me numerous times a day that they love me! It'll happen soon... and you'll know that she means it because you've had to wait!!