She won't question why you asked her to kill Colette earlier if her death will result in Sylvarant's flourishing?

[Kratos cranes his head back just a touch further, so Yuan can see the way his eyebrows are raised. Yuan isn't thinking things through these days.]

The others know more than that. If we begin in a state of concealment and put her in a position she'll learn otherwise, we lessen the chance of keeping her trust.