Answer and Explanation:
In the short story "The Lady, or the Tiger?", the author Frank Richard Stockton leaves the ending up to us. He does not reveal what is behind the door the man opens, but asks us what we think the man found.
In my opinion, the man ended up opening the door that had a tiger behind it. The reason why I believe that to be the ending is the manner in which the author describes the princess. He compares her to her father. Their personalities are similar, and they are both described as semi-barbaric. The semi-barbaric king was the one who came up with this horrendous idea of a fair trial: the accused needs to choose a door; if he finds the tiger behind it, he dies, but if he finds a damsel, he is forced to marry her.
If the princess and her father are so much alike, I do not doubt her jealousy will interfere. She does love the man. But she loves him so much that she cannot bear the thought of seeing him marry someone else. Being egotistic, she would most likely rather see him die. If she cannot have him, no one can.