A British woman killed her two children in a hotel room in Spain while they slept and spent the night with their bodies, a court has heard.
Lianne Smith, 43, has admitted smothering Rebecca, five, and 11-month-old Daniel, in Lloret de Mar, Costa Brava, in May 2010.
The Provincial Court in Girona will determine whether she is criminally responsible for two counts of murder.
Her lawyer said she was in a state of "psychiatric disturbance" at the time.
The deaths took place after Ms Smith's partner, Martin Smith, was extradited to the UK on charges of sexually abusing a girl.
Smith, a 46-year-old former TV psychic, originally from North Shields, North Tyneside, was later convicted of rape and jailed for 16 years.
In January he was found hanged in his cell in HMP Manchester
http://www.bbc.co.uk/news/uk-england-18484427