Hope House offers a safe, secure and comfortable place for women to recover from substance dependence and receive additional support for other compulsive disorders.
It is the first time Kate has been seen in public after photographs of her on holiday in Mustique were published by foreign media.
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The former reality TV star will follow in the footsteps of Abraham Lincoln and John F Kennedy when he takes his oath later on Friday.
The President-elect's comments on Twitter will come under even closer scrutiny when he takes office on Friday.
Cold, quiet and calm