Mackenzie Shirilla’s prison nickname “Shirilla the Killa” just exploded across the internet after her ex-girlfriend Shyann Topping dropped the chilling detail in a new interview. The convicted Ohio killer laughed about the moniker her bunkmates gave her — and that casual moment has true crime fans spiraling.

The Revelation That Stopped Everyone Cold

Topping, who dated Shirilla for a couple of weeks inside the Ohio Reformatory for Women in 2023, told People she was clearing up a false rumor about her own charges when Shirilla shrugged it off and dropped the line like it was nothing.

“They call me ‘Shirilla the Killa,’” Shirilla said, laughing.

Topping didn’t think much of it at the time. The two were in the middle of a whirlwind prison romance, and Shirilla came across as bubbly, smiley, and always put together — makeup done, clothes altered to fit tighter, line-dancing every Friday like she was the most popular girl on the block.

Only later, after Topping got out and saw the full evidence, did that laugh hit different.

Who Is Mackenzie Shirilla?

Shirilla was just 17 when she drove her car over 100 mph into a brick building in Strongsville, Ohio, on July 31, 2022. Her boyfriend Dominic Russo and their friend Davion Flanagan were both killed instantly. Prosecutors proved she intentionally caused the crash. In 2023 she was convicted on multiple murder counts and sentenced to 15 years to life. She won’t be eligible for parole until 2037.

She’s been serving time at the Ohio Reformatory for Women ever since — and apparently earning quite the reputation among the other inmates.

What Topping Saw Behind Bars

Topping walked into the relationship believing Shirilla might actually be innocent. Limited information inside prison will do that. She even planned to help advocate for her release once she got out.

Then she saw the evidence.

“When I left prison I did not view Mackenzie as the monster she is now being portrayed as,” Topping said. “When I first got out I was like, ‘Oh, they don’t know what this girl’s been through.’”

That changed fast. Topping now says Shirilla showed zero remorse for the two young men who died. She described Shirilla as demanding in their short relationship — getting upset if Topping didn’t come outside on time — and already dreaming big about life after prison: concerts, travel, influencer fame, and writing a book about everything that happened.

Another former inmate who crossed paths with Shirilla called her the “Regina George of prison” — the ultimate “It girl” who carried herself like she was famous.

Why This Story Is Everywhere Right Now

Netflix’s new documentary “The Crash” dropped fresh attention on the case, and suddenly every detail feels electric. New jail calls and text messages have surfaced. Shirilla’s latest appeal attempt is making its way through the courts. Families of the victims are pushing “Dom’s Law” to stop convicted killers from profiting off their crimes on social media.

Then comes this nickname story — simple, raw, and somehow more disturbing than anything else. Shirilla didn’t just get the name “Shirilla the Killa.” She repeated it with a laugh.

You could feel the collective gasp online the moment Topping’s interview hit. True crime communities lit up with the same question: What kind of person laughs about a nickname like that after taking two lives?

The Human Side No One Expected

Topping’s journey from believer to disillusioned ex adds a layer most stories miss. She went in thinking she was dating someone who had been wronged. She came out realizing she had been shown exactly what she wanted to see.

“She could be the sweetest girl ever,” Topping said, “but if she doesn’t like you she’s the Devil.”

That duality — the bubbly prison “It girl” who never showed sadness and the teenager who caused a crash that ended two lives — is what keeps people scrolling, talking, and theorizing.

The nickname “Shirilla the Killa” isn’t just prison slang anymore. It’s become the latest lightning rod in a case that refuses to fade. And with Shyann Topping finally speaking out, the story just got a whole lot darker.