Contented to be a friend of Snow White (5)

I believe the answer is:

happy

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'contented' is the definition.
(glad means contented or happy)

I cannot understand how the rest of the clue works.

(Other definitions for happy that I've seen before include "Delighted" , "A not so low" , "Well-pleased" , "Carefree" , "Fortunate; content" .)

I've seen this clue in The Daily Express.

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