Mr Walker said to her "you know you deliberately crashed into that car, but you won't admit it because you cannot believe you did it."
Sayers said she has no memory of the crash, and denies that she is lying about her lack of memory.
The partner of Sayers at the time of the crash also gave evidence to the Coroner's hearing today.
Shane Phillips said that after the crash she told him she "may have" crashed deliberately.
A friend of the couple, Shelly Soanes has also given evidence.
Ms Soanes said Lyree Sayers told her if Mr Phillips ever left her, she would kill herself.
If you need help
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• Depression helpline: 0800 111 757 (available 24/7)
If it is an emergency and you feel like you or someone else is at risk, call 111.