Eh, you don't play the character who's most like you thematically, you play the character who suits your playstyle. Samus and Falcon both reward skill, but Samus has very distributed strength - good at attack, good at defense, good at recovery - while Falcon lends himself most strongly to aggressive play. Jaime fights a very cautious, defensive style in his cape life, but he fires up the console and you know he's there to do some damage. Diana would seek a more balanced character, and of that group, I gotta think Samus' subversive history would appeal to her. ("Samus is a GIRL?" still gets said to this day, I had the joy of hearing it from a friend's little brother a couple years ago.)