le'eazel = Her goals in life would conflict with her being a wizard, rogue, and a few other classes. The fact of every word out of her mouth is abrassive, egotistical, abusive, and threatening to some degree or another means she can really only be 1 of 2 things Fighter, or Barbarian. Then there are a few other things that would be utterly stupid to have on another class. her skills as well are made for being a front liner/damage dealer in melee
That isn't her class talking that is her culture. There are Githyanki of every class except for Paladin and they are all like that. They are a very angry race fighting an eternal war across the planes under the rule of a Chaotic Evil Lich-Queen. They couldn't even overthrow her is they wanted to because she kills any that start to get to power, and long before they get powerful enough to challenge her.