Graeber / Wengrow 19: "The colonial history of North and South America is full of accounts of settlers, captured or adopted by indigenous societies, being given the choice of where they wished to stay and almost invariable choosing the latter."
it seems they experienced "qualities of mutual care, love and above all happiness"
see J. N. Heard's thesis: "The Assimilation of Captives on the American Frontier in the Eighteenth and Nineteenth Centuries" (1977)