What character wants motivation in the story "the lady or the tiger"

The King: The king is a man of fervor and insatiable will. A "semi-barbaric" man, he has designed a court of chance for the criminals of his kingdom. When he learns of his daughter's love affair with a lowly cortier, he puts the courtier in the arena. Behind one door is the most suitable marriage candidate in the land. Behind the other is the most fearsome tiger the king could find.

The Princess: The princess is in love with the courtier, and the couple is happy together. However, her father is furious when he learns of the scandalous affair and throws the courtier into prison, and eventually, the arena. The princess, a woman of immense resources and determination, takes it upon herself to learn which door holds the tiger and which holds the lady. However, this knowledge produces a great deal of tension for the princess. She has godlike control over the fate of her lover. Because she knows that she will never see him again no matter which door she leads him to, the choice becomes much more complicated. Either she leads him to the tiger, where he will be devoured almost instantly, or she leads him to the lady, a woman who the princess believes has flirted with the courtier and whom the princess despises. The third act of the story centers around the princess's struggle with this dilemma, and the story ends without her decision being made clear to the reader.

The Lady: The lady, whose name and identity are unrevealed, is the woman with whom the courtier appears to be having an affair. Should the courtier open the correct door in the arena, this is the woman he shall be met with and married to. She is beautiful and has been chosen by the king's men to be a perfect bride for the courtier. However, the princess believes her to be a competitor for the courtier's love, as she's seen them talking together in the past.

The Lover: The lover is a man who, although of lower status than the princess, is "handsome and brave to a degree unsurpassed in all this kingdom." He is thrown into the arena for his affair with the princess. He trusts that the princess will discover which door holds which fate, and follows her directions blindly at the trial. His fate is left unresolved at the end of the story.