A Slovakian model on trial in the fatal shooting of her millionaire British ex-boyfriend has testified she fled the scene in his vehicle because she was scared after he threatened her and was shot in a struggle over a pistol.

Maria Kukucova said Tuesday she took Andrew Bush's Hummer but did not know he was dead.

Prosecutors say Kukucova shot Bush, 48, twice in the head and once in the shoulder April 5, 2014, at his home in the southern Spanish beach resort of Estepona and are seeking to have her imprisoned for 20 years.

The 26-year-old Kukucova testified in the Malaga courtroom a day earlier that the gun "just went off" and she didn't know how many shots were fired after going temporarily deaf following the first blast.