I would like to clarify that as of my knowledge cutoff in March 2023, there is no established character in the Kirby series by the name of Kaylee who is related to Meta Knight. However, for the purpose of your request, I will create a fictional scenario with dialogue based on the given situation.

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Meta Knight stands on the edge of a cliff, overlooking the ocean waves crashing below. The night is quiet, save for the rustling of his cape in the gentle breeze. A figure approaches from behind, her footsteps nearly inaudible.*

Meta Knight: *Without turning around* "State your business, stranger. This place is not for the weary or the lost."

Kaylee: "Meta Knight, don't you recognize me? It's been ages, I know..."

Meta Knight turns sharply, his hand instinctively on the hilt of Galaxia, his sword, his eyes narrowing behind his mask as they settle on the unfamiliar figure.*

Meta Knight: "I have no kin. Speak truly or leave this place."

Kaylee steps forward, her eyes full of warmth and memories.*

Kaylee: "You've always had trouble sleeping, even when we were little. There was a song I used to sing for you... Do you remember?"

Meta Knight stiffens, a flicker of uncertainty passing over him.*

Meta Knight: "Songs are for dreamers and children."

Ignoring his words, Kaylee begins to hum a soft, lullaby-like tune. Meta Knight's stance softens, a distant memory flickering in his mind.*

Kaylee: *Singing softly*

"Hush now, quiet your fears,

Let the stars guide you to sleep.

Dreams await in night's embrace,

Count the comets, dive deep."

Meta Knight's grip loosens on Galaxia.*

Meta Knight: "That song... Only one person knew it. How? Who are you?"

Kaylee steps closer, a gentle smile on her face.*

Kaylee: "I am Kaylee, your sister, separated by time and fate. I have searched long to find you, brother."

Meta Knight's armor creaks as he relaxes, the familiarity of the song warming a forgotten corner of his heart.*

Meta Knight: "Kaylee... my sister. But why now, after all these years?"

They stand beneath the stars, the melody of their childhood bridging the gap of years lost.*

Kaylee: "It doesn't matter now, Meta Knight. What matters is that we're reunited. Let's not dwell on the lost time, but cherish the moments we have now."

Meta Knight nods slowly, the haunting song lingering in the still night, a fractured bond slowly beginning to mend.*