[1%] Aides found it odd that Wellmy would have entrusted a letter to Leo while knowing his relationship with his sister >> the highlighted pronoun from context feels like it's talking about Wellmy, in which case, this should be her
[8%] alone together Aurelio even >> needs a period after 'together'
[8%] freshly run church bell. >> should be rung
[91%] handed one to Dinae. >> should be Dina
I believe a word is missing here, and it may be due to translation. However, for proper English syntax "the" should be inserted as in: ...come to the capital...
Given it being Carmine, "come to our capital" also works.
But there needs to be something there, yes.
I’d been about to explain how the Northcours were constantly hosting guests, that Samuel and I would often play the hanon for those guests after dinner, and that that was the reason Samuel and I hadn’t had time to compose. I’d cut myself off so I could keep it a secret that Percival and Albert had visited the Northcourt manor.
Volume 13 Part 3
45% an extremely a deep sigh > an extremely deep sigh
46% chuckled as glanced -> chuckled as [she | we] glanced
81% should be fine also as you follow our instructions -> should be fine as long as you follow our instructions
89% Jade Winged -> Jade Wings
48% - […] he had been known to work in nothing but a work shorts, […] -> Extra, or missing word(s)? “in nothing but work shorts” or “in nothing but a pair of work shorts”
I can't recall if I missed any from the other parts but the contractions Mr., Ms., and Mrs. should have a period after them. So in this case, Ms. Maliksi.