Keep the Amelia because she is a great unit and even better on an Armor Emblem team(or just give her armor march to your zephiel). Give your Titania a killer axe and upgrade this to a slayer weapon.
Thanks for the advice! I decided to fodder her off to Zephiel to give Armor Emblem some extra oomph. If I pull another Amelia though, I'll be sure to give her a shot.
Pokemon GO
Fire Emblem Heroes
Fate Grand Order
Dragonball Legends
Dragalia Lost
IV Calc
Heroes