AceShowbiz - Nine years after her father Frank Rinna died in 2016, Lisa Rinna was finally able to talk in details about the circumstances surrounding his passing. During the March 28 episode of "Let's Not Talk About the Husband," which she co-hosts with her husband Harry Hamlin, she recounted the events leading up to and the day of her father's passing.

Frank Rinna died in Oregon at the age of 94, opting for assisted suicide under the state's Death with Dignity Act, which allows terminally ill patients to end their lives with medical assistance.

"In Oregon, you're permitted to check out when you want to check out," Hamlin, 73, explained. "He was 94, and his quality of life had diminished to the point where he wanted to transition. You can do that in Oregon if you follow the right guidelines and the protocols and talk to the right number of doctors."

Rinna elaborated that the process required her father to get approval from two doctors to verify his terminal illness. Frank, an artist, complied with all necessary protocols, a process that took about three to six months.

The tragic story was too painful for Rinna to share when it happened, largely due to her involvement with "The Real Housewives of Beverly Hills" at the time.

The couple described the day Frank received his medication as surreal yet poignant. It was a "hospice situation" involving a death doula and Rinna's half-sister. Music was played to set the scene, including Frank Sinatra, which Frank loved. However, the reality of the situation was stark. "You're going to watch your parent kill themselves," Rinna said.

Due to a delay, the medication arrived two days late, which made Frank impatient. "The pills were supposed to come on a Tuesday... so when they set their mind to this, they're ready - so they didn't come till Thursday," Rinna remembered. "And my dad was so mad that the pills didn't come."

Once the medication arrived, Frank had to drink it himself per the legal requirements, a task that took about 45 minutes to complete. Rinna recalled the moment vividly, "They just fall asleep... it's not anything gruesome. It was very peaceful. It was a very humane way to go."

Despite the peace her father found, Rinna described a conflicting emotional experience. "It didn't feel awful, but it felt awful," she admitted, expressing the complicated grief of supporting a loved one's choice for assisted death.

If you or someone you know is considering suicide, please contact the 988 Suicide & Crisis Lifeline by dialing 988, text "STRENGTH" to the Crisis Text Line at 741741, or visit 988lifeline.org.