I'm just, you know, . . .

[shootingstar]

Although she had known her brother was gay since he was a teenager, he hadn't officially come out until he was twenty-two. And he'd never had a happy or long-term relationship. She felt guilt, that her life had the power to shape her brother's life in such meaningful ways.
'Oh, you know Ewan, Ewan's Ewan.'
Nora smiled back as if she knew who Ewan was and exactly what he was like. 'Yeah. He's great. I'm so happy for you both.'
He laughed. 'We've been married five years now. You're talking as if me and him have just got together.'
'No. I'm just, you know, I sometimes think that you're lucky. So in love. And happy.'
(The Midnight Library by Matt Haig, episode Peppermint Tea)

What does "I'm just, you know" express or mean in the excerpt above? In what way does it function here? Is "I'm just, you know" a complete sentence? Or is it a discontinued/interupted phrasing? Then, in what way is it proceeded, respectively completed?

 

[5jj]

The words are meaningless filllers, part of a sentence that is not completed.

 

[shootingstar]

The words are meaningless filllers, part of a sentence that is not completed.

Then, what do they express? I think they do have a function and perform a task there.

 

[5jj]

Well, it's like, you know, kind of, just meaningless.

 

[shootingstar]

Well, it's like, you know, kind of, just meaningless.

You really think these words can be left out without affecting Nora's statements? You really think the words "I'm just, you know, . . . " dont' have any effect on her statement?