Character Pages are to be named after their birth names, or as close to this as possible, so Kaderin not Kaderin the Cold Hearted.
This is because sufficient change has occur in the trailing names during the series that Emmaline Troy could also be called Emma the Timid or Emma the Unlikely. Other characters have multiple options.
If you would like to use a trailing name use piped links. For example:
[[Emmaline Troy|Emma the Unlikely]] becomes Emma the Unlikely