Marina knew it would be a long time before she saw her mother’s face again. When her grandmother asked her if she wanted to go on a two-week cruise to Alaska, Marina wasn't sure how to answer. Marina loved spending time with her grandma, but she had never been away from her mother and father for more than one night. Marina was sure that she would feel _______________ because she couldn't see her parents for so long.

Which word best fills in the blank that will clearly show Marina's feelings at this point in the passage?