But her advisers say that the more she thinks about it--egged on in private by the Campaigner in Chief--the more she likes the idea.

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"She knows if she thinks too hard about what she's doing, what she's becoming, then it is going to incapacitate her, " Pratchett said.

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"No one thinks of it as something to be ashamed about, " she said.

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It It is important therefore to ensure your mum thinks carefully about what she wants.

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