Lisa Rinna became emotional while talking about her mother's stroke to followers on social media.

"Nobody tells you how to do this," Rinna, 58, said on her Instagram story Thursday (via Page Six). "You know, there’s not a handbook. There’s never a way to be ready to let go."

"We’re just not taught that death is OK," she added. "It’s never talked about, and we’re never told that it’s OK to let go."

"The Real Housewives of Beverly Hills" star revealed on social media that her mother, Lois, had suffered a stroke on Wednesday.

Lisa Rinna got emotional while discussing her mother's stroke on her Instagram story. Lois Rinna previously suffered a stroke in 2013.

Lisa Rinna got emotional while discussing her mother's stroke on her Instagram story. Lois Rinna previously suffered a stroke in 2013. (Photo by Amy Sussman/Getty Images)

LISA RINNA REVEALS HER MOM LOIS ‘HAD A STROKE’ AND IS ‘TRANSITIONING’

"I know how much you appreciate and LOVE Lois so I need to tell you that she has had a stroke, I am with her now," Rinna said on Instagram. "So lets [sic] celebrate her and send her so much love while she transitions."

"I was so conflicted to share this very very sad news with you, but I know you would want to know," she added.

Lois Rinna, Lisa Rinna and Harry Hamlin attend Christmas Celebration On Skid Row at the Los Angeles Mission on Dec. 23, 2019, in Los Angeles.

Lois Rinna, Lisa Rinna and Harry Hamlin attend Christmas Celebration On Skid Row at the Los Angeles Mission on Dec. 23, 2019, in Los Angeles. (David Livingston/Getty Images)

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Rinna's "Real Housewives" costars shared their support in the comments section. 

"Love you Lisa," Kyle Richards commented. "We all love Lois so much. Please give her a kiss for us. Sending love & prayers."

"Love you both so much," Dorit Kimsley wrote.

Rinna and her mother arrive at Saks Fifth Avenue's 20th Annual Spring Luncheon at the Beverly Wilshire Hotel on April 9, 2008, in Beverly Hills.

Rinna and her mother arrive at Saks Fifth Avenue's 20th Annual Spring Luncheon at the Beverly Wilshire Hotel on April 9, 2008, in Beverly Hills. (Photo by Jesse Grant/WireImage via Getty Images)

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Lois suffered a previous stroke in 2013. In May 2019, Rinna wrote on Twitter, "My Mom had a devastating stroke 6 years ago and had to learn how to walk and talk again months of rehabilitation she is one of the lucky ones. She is not the same as she once was but she has overcome so much. We are blessed and so grateful."

Fox News' Jessica Napoli contributed to this report.