Question about Amelia builds

For enemy phase build I recommend slaying lance(+def boost).Bonefire/ignis,Qr and ward armor.

Yeah she can be built accordingly depending on IVs. If you're building Quick Riposte, you don't need to try and fix her speed and instead capitalize on a better enemy phase build, which is great on +Atk IV. Bonfire/Ignis is still her best special though because of her very high DEF.