Mairead Philpott tells prosecutor Richard Latham QC that it is "possible" her husband Mick got out of bed to light the fire.
She agrees with him that there was no mention of this in her defence case statement.
Mr Latham asks why she would say nothing of this in her interview if she was innocent. Mairead says she was following advice.
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Time magazine has disputed Donald Trump's account of how he rejected a request for an interview for its "Person of the Year" issue.
The Police Federation chairman said officers were often "letting someone off with a warning and hoping for the best".
A total of 21 are also injured by a blaze which ripped through the upmarket 22-storey hotel on the Black Sea coast.