Lakshmi has the same facial structure as Diane Dahlen. Her name is randomized when Académie Le Tour is generated. The name "Lakshmi Graham" is only referenced in the game files.
Even though Lakshmi is a cheerleader, she doesn't have the standard Maxis cheerleader outfit in her head-shot like the other cheerleaders do. When she appears in-game, her outfit may change to the one that corresponds to her NPC type.