*Chuckles* I'm not 100% clear on the 5th edition minutae of raging, but it didn't seem to me like it would be i character to think in depth about spellcasting tactics while<em>bear-sark</em>.  Manuver to take advantage, or share advantage with another melee combatant, or cover someone she's tryign to protect? Sure, that kind of tactical thinking is perectly apropraite.