It may not be that simple.
Bear in mind that humans are violent by nature and live within the confines of controlled chaos. When primal rage, confusion, or frustrations take over, it's quite easy to give into the desire to destroy things. It is quite conceivable, given her jealousy and irrationality, to have pointed to the door with the tiger. Do you think love is innately stronger than the urge to disassemble or destroy? Would it not be easier for her to have him killed and the pain exist momentarily rather than have him spend a lifetime with a woman she hated? Would that urge not be strong enough for someone in that state of mind to make that rash decision?