Passage: Reaching the ice palace, Anna meets Elsa, but when she reveals what has become of Arendelle, Elsa becomes upset, saying that she cannot undo it, and accidentally freezes Anna's heart, poisoning her. She then makes a giant snow monster named Marshmallow, who chases Anna, Kristoff, and Olaf away.  Realizing the effects of Elsa's spell on Anna, Kristoff takes her to the trolls, his adoptive family. Grand Pabbie reveals that Anna will freeze solid unless "an act of true love" reverses the spell. Kristoff races Anna back home so Hans can give her true love's kiss. Hans and his men reach Elsa's palace, defeating Marshmallow and capturing Elsa. Anna is delivered to Hans but, rather than kissing her, Hans instead reveals that he has actually been plotting to seize the throne of Arendelle by eliminating both sisters. Hans locks Anna in a room to die, and then manipulates the dignitaries into believing that Elsa killed her. He orders the queen's execution, only to discover she has escaped her detention cell.

Question: What for was Kristoff trying to return home quickly?
Hans can give her true love's kiss