She has always wondered how it would be to live in Pandora, so when she saw the opportunity to experience Pandora in all her beauty, she took their hand. Given the role to keep her team alive and healthy, she knew her role won't be easy, she just didn't realize that 90% of her problem is having to keep a strong willed and childish marine alive while making sure she doesn't displease a certain Na'vi. Not expecting to fall in love in this majestic planet, even going as far as to protect them.