Utah mom accused of poisoning husband with fentanyl cocktail had taken $2 million in life insurance on him and tried to poison him at least once before with a sandwich on Valentine's Day

• Police say Kouri Richins killed her husband by poisoning his drink with fentanyl.
• Before the killing, prosecutors say Richins took out life insurance policies on her husband.

A Utah woman who police say killed her husband before she wrote a children's book about grief is now accused of also taking out $2 million in life insurance policies on him before his death.

Police charged Kouri Richins, 33, with aggravated murder and three counts of possession of a controlled substance with the intent to distribute earlier this month.

Investigators said in court documents that Richins had mixed a Moscow Mule for her husband, Eric Richins, that contained five times the lethal dosage of fentanyl.

According to court documents, police said Richins bought the lethal drug — which she called "some of the Michael Jackson stuff" — through an acquaintance for $900.

Prosecutors on Thursday filed an amended document that also accuses Richins of taking out life insurance policies on her husband before his death, according to NBC News.

In the documents, the state alleges that Eric Richins found out his wife had taken more than $100,000 from his bank account, a $250,000 home equity line of credit on their home, and spent $30,000 on his credit cards in September 2020, NBC reported.

The document says that Richins took out several life insurance policies against her husband between 2015 and 2017 totaling more than $2 million, which he did not know about, according to the outlet.

The filing states that in October 2020, Eric consulted with a divorce attorney and changed his will to put his estate under the control of his sister, designating her as the beneficiary of his $500,000 personal life insurance policy, according to NBC.

The new filing also says that Richins tried to poison her husband on previous occasions, NBC reported. Prosecutors say that Richins left her husband a sandwich in his car on Valentine's Day with a love letter that caused him to break out in hives shortly after eating it, the outlet reported.

"Eric found his son's EpiPen and administered it to himself and slept," the document says.

Eric thought his wife had tried to poison him and told a friend about his suspicion but decided to stay with her for the sake of his children, the state says according to NBC.

Richins' children's book — titled "Are You With Me?" — was published on March 5.

The book is meant to help children cope with the death of a loved one. While promoting the book on a local television show, Richins said it was meant to help kids "find happiness some way or another."

"My husband passed away unexpectedly last year ... it completely took us all by shock," she said on Good Things Utah. "I'm trying to understand not only how to grieve as a widow, as a wife, but also with my kids, how to help them understand what just happened."

The book is no longer available on Amazon, but a previous description said it was written "by a loving mother who personally faced this challenge, this book is designed to offer comfort and solace to young minds in a way that is both accessible and engaging."