Editor

Kaity Sinclair

Developmental & continuity editor · Middle grade & YA. I catch the plot holes, the repeated beats and the character slips that readers notice and authors stop seeing, so your book holds together from page one to the last line.

Get a free sample edit See rates

About

Story that holds together

I edit middle-grade and YA fiction, and I focus on developmental and continuity work: making sure the story holds together. On The Mirror, a six-book middle-grade adventure series from Phoenix House Books, I tracked rules, timelines and character details across books, flagged contradictions before they reached print, and suggested fixes that kept the page count and the author's voice intact.

I read like a fan and edit like a skeptic. If your world has rules, I'll hold the book to them.

Before & after

Three real catches

Three real catches from The Mirror: Basic Training (Book One, October 2026).

Developmental · World-rule break

Dressed too early

Caught: The series has one rule for the costume change: it happens halfway through the step into a world. The final scene had a boy already in costume while still standing in the hallway, before he'd gone through the door.

Why it mattered: Readers learn the rule early. Seeing it break on the last page is exactly what a sharp middle-grade reader catches.

After: "Jr and Dakota stopped dead on the threshold, still in their pajamas, still in their socks on warm gray floor, and neither of them moved."
Continuity · A count that disagreed with itself

Two tries, or three?

Caught: A character said the first door "took me two tries to beat it. Failed it twice before I finally got the timing right on the third attempt." Two tries and a third attempt, ten words apart.

Why it mattered: In this series, three failures and the door keeps you. A reader tracking strikes can't have a character contradict himself in one breath.

Before: "it took me two tries to beat it." → After: "it took me three tries to beat it."
Line level · A spoiler from the narrator

Letting the payoff land

Caught: The narrator said the main character "would be asked later" about a sound in the house, pointing ahead to a question that comes chapters later.

Why it mattered: Telling the reader a payoff is coming takes the surprise out of it. The line was cut, along with three other narrator flash-forwards like it.

Fix: Cut. The question now arrives with no warning.

Services & rates

What I offer

ServiceWhat you getRate
Free sample edit1,500 words edited, plus a short note on what I'd focus onFree
Manuscript critiqueFull read and a 4–6 page editorial letter: plot, pacing, character, continuity$0.012/word
~$480 for 40k
Developmental + continuity editEditorial letter, in-margin comments, and a story bible / continuity log (names, ages, timeline, world rules)$0.025/word
~$1,000 for 40k
Line + copy editSentence-level edits in Track Changes: clarity, rhythm, consistency, grammar (Chicago style)$0.02/word
~$800 for 40k
ProofreadFinal typo and formatting pass on the finished interior$0.01/word
~$400 for 40k
Series continuity checkCross-book check of the facts a series has to keep straightQuote

From an author

“Kaity read every page of The Mirror with me, paragraph by paragraph, and she caught what I couldn’t see anymore: a rule broken on the last page, a count that didn’t add up, a word too old for my readers. She keeps asking questions until what I meant and what I wrote are the same thing. I wouldn’t publish a book without her.”Kateryn Cole, author of The Mirror series

Contact

Send me your first 1,500 words

Tell me your title, your genre and age range, and your word count. I'll send back a free sample edit and an honest note on where I'd focus.

Email me