Well if U really believe that elin will terrafication for example mages...I won't tell U that she cant. But chance is low. U need luck xDD Sadly in this version we don't have pet "JobSkill" . Terra will be probably Elin's "JobSkill".
My elin has less than 40 points in int. I think best stats for elin is a lot of con and agi, less strong and wis than con and agi. int lower than 40 should be ok. xD
We can't forget that elin has 3 strong/attack based skills xD She gets 3rd after her rb<3