Olivia Jade and Isabella Rose were all people could talk about for the foreseeable future.

But while Olivia Jade has opened up more since the scandal, her sister has remained pretty quiet.

So, what’s the deal with Isabella Rose Giannulli?

Isabella Rose Giannulli

Well, the untold truth of Lori Loughlin and Mossimo Giannulli’s more subdued daughter is pretty intriguing.

Isabella Rosewas born on September 16, 1998.

“Happy Mother’s Day Mama, I love you.

Isabella Rose and Olivia Jade Giannulli

I’m so proud to be your daughter today & everyday.”

And in fact, Giannulli attended a private high school, but not justanyprivate high school.

Still, her high school wasmorethan just a nice, private school.

Isabella Rose Giannulli and Lori Loughlin

It was practically a college-level education in and of itself.

According toCloser Weekly,Giannulli attended Marymount High School in Los Angeles.

The school describes itself pretty intensely.

Isabella Rose Giannulli

Yes,Giannulli already has a bit of an acting career.

And when it comes to made-for-television movies, Loughlin shines.

Not only was Giannulli thrilled to get to act, but she was delighted to work with her mom.

Isabella Rose, Lori Loughlin, and Olivia Jade Giannulli

Clearly, Isabella is a lot more low-key than her younger sister.

So, where did that half-a-million land Isabella?

The University of Southern California, as it turns out.

Isabella Rose Giannulli and Lori Loughlin

However, after news of the scandal broke, many wondered if Isabella was still enrolled at USC.

“Happy birthday mama.

I love you,” Isabella wrote, along with a red heart emoji.

Isabella Rose and Olivia Jade Giannulli

But still, she has remained pretty quiet and doesn’t post much on her Instagram.

However,Peoplewould go on to debunk this report.

“Bella Giannulli remains an active member of the Delta Tau chapter of Kappa Kappa Gamma.”

USC campus

And that’s something Isabella Rose Giannulli knows first-hand.

Both Isabella and her younger sister, Olivia Jade, areincrediblylucky to be so close to each other.

“I love it,” Isabella toldBUILD Serieswhen asked about having a sister so close in age.

Olivia Jade, Lori Loughlin, and Isabella Rose Giannulli

“She’s like my best friend.

Like a built-in buddy since birth.

Isabella also added that she thought of herself as her sister’s ultimate support system.

Olivia Jade and Isabella Rose Giannulli

“I’m her biggest fan,” she said.

Aw, those two really have each other’s back through thick and then.

And they’ve surely needed each other’s support eer since their parents' scandal became public knowledge.

Kappa Kappa Gamma house at USC

“Lori’s concern all along has been Isabella and Olivia Jade.”

(Loughlin and Mossimo’s jail time did end up overlapping.)

Isabella and Olivia continue to stick together.

Isabella and Olivia Giannulli

As the daughter of two successful, high-profile people, she’s more or less always been well-off.

Instead of staying home and hiding from the public, she basically went on vacation.

To quotePage Six’s story about Isabella’s excursion, “We all cope how we can.”

Lori Loughlin and Mossimo Giannulli

Isabella Rose Giannulli at event