Girl at different age

We must understand the differences female by each ten years.

What is the difference between girls aged:
8, 18, 28, 38, and 48, 58 and 68?
 At 8 - You take her to bed and tell her a story.
At 18 - You tell her a story and take her to bed.

 At 28 - You don't need to tell her a story to take her to bed.
                                But you'll be took by her to bed.
  At 38 - She tells you a story and takes you to bed.
  At 48 - You tell her a story to avoid going to bed.
  At 58 - You stay in bed to avoid her story.
 At 68 - If you take her to bed, that'll be a story!!