On Thursday, the court was again shown a series of Facebook messages between Ms Patterson and her online friends.
In the messages, Ms Patterson vented to her friends about her parents-in-law being reluctant to take sides in a financial disagreement she was having with their son, Simon.
In her messages, she recounted her in-laws suggesting prayer and conversation between Ms Patterson and her husband to resolve the matters.
Dr Rogers referred to "eye-roll emojis" used in one of the messages and another emoji that Ms Patterson said showed a straight-line smile underneath.
Dr Rogers noted that emojis were a deliberate choice made by a user, and asked Ms Patterson what she would call the emojis.
"All I can say about it, it's a face with a straight line for a mouth," she replied.
"I don't know what I'd call it."
"Even though you used it?" Dr Rogers asked.
"Yeah," Ms Patterson replied.
Dr Rogers takes her to another emoji after a reference to prayer again in the message. They disagreed about whether it was an eye-roll emoji.
"There's a better eye-roll emoji than these … I can't see anything about eyes rolling in there," Ms Patterson said.
Health issues "planted" and mushrooms weighed to determine fatal doses. Here's how accused triple-murderer Erin Patterson responded to a number of accusations the prosecutions put forward during cross-examination.
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