Melanie Smith will be sentenced on 8 May for murdering five members of the same family in a flat fire in Prestatyn.
Mr Justice Griffith-Williams warned the 43-year-old that she should expect a life sentence.
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Winds will strengthen to gale force by dawn, these severe across exposed coasts and hills particularly in the southwest.
A Swansea charity worker says he was left "shocked and saddened" after being questioned by counter-terrorism officers returning from Iraq.
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