She will definitely need to unlock Bard. Just to make it easier on herself, since people will make comments about Level 60 archers in content.

I totally get wanting to mess around with crafters and gatherers. I enjoy it myself. Unfortunately, SE still hasn't really implemented a way to progress as something other than a Disciple of War or Disciple of Magic.

If she wants a sort of plus, Bard is a sort of support job. While she'll be expected to DPS, Bard can also provide party support, such as MP/TP regen and a lovely song called Foe's Requiem that helps casters deal more damage to mobs/bosses. It's not a true support job, but it is different from your average melee or caster.