Jacqueline Veissid Libri

Ruby wants to play with her older brothers, but they always ignore her and leave her out of their games--but when Ruby starts to build her own castle she discovers a way to make her brothers want to play with her.

Caspian lives alone in a lighthouse surrounded by the cold gray-blue sea, longing for a friend; so one day he puts a message in a bottle and floats it away in the sea--but the friend who finds it is someone completely unexpected.