What is Kit's reaction when she arrives at the new world in The Witch of Blackbird Pond?
You can find the answer to your question in Chapter One in the opening paragraphs, that clearly show Kit's reaction after months of travel from Barbados to the first sight of what is to be her new home: the colony of the new world in North America:
She didn't want to admit how disappointing she found this first glimpse of America. The bleak line of shore surrounding the grey harbour was a disheartening contrast to the shimmering green and white that fringed the turquoise bay of Barbados which was her home. The earthen wall of the fortification that faced the river was bare and ugly, and the houses beyond were no more than plain wooden boxes.
We can see hear the implicit comparison that Kit makes with the new colony and her home in Barbados. Compared to the bright colours and romance of Barbados, this new colony is a poor comparison, with words such as "bleak," "grey," "bare" and "ugly" creating a somewhat foreboding and ominous mood, perhaps helping to foreshadow the lives and outlook of the Puritans that Kit will struggle so much to adapt to. Consider too how the contrast between Barbados and the new colony is emphasises by comparing the "grey" of the colony to the bright colours of Barbados, that is "shimmering green and white" and "turquoise." Clearly Kit's new home comes a poor second, at least on looks.