Talking too much

I'm not sure whether it is the age problem
but at 8, Xuan really likes to talk
She can go on and on and on... about the same topic, non-stop, until I had to say "ok, that's enough of talking."

Example:

Xuan: "Mummy, do you think mechanical pencil is better or normal pencil is better?"

Me: "I think mechanical pencil is better, I like mechanical pencil"

Xuan: "I also like mechanical pencil. But I think normal pencil is better... Do you know why? Because it is thicker. Some mechanical pencil lead are very light, but normal pencil lead are always darker."

Me: "That's not true, normal pencil also have lighter lead like HB, just like mechanical pencils"

Xuan: "Oh is it? Then I think mechanical pencil is better. I can write in nice handwriting using mechanical pencil. But sometimes, I still think normal pencil is better because........................"

If I'm not wrong, for the next 8 minutes, she was still on the same topic.
*slap forehead*

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