Visions & illusions
(covers information from a vision or illusion)

Mimi Picard was the daughter of Jean-Luc Picard during his Nexus experience in 2371.

When he first encountered her in the Nexus, Picard and his family were celebrating Christmas. Mimi received a doll from her father, which she was delighted with, remarking that it was "beautiful". She helped decorate the Christmas tree. (Star Trek Generations)

Mimi Picard was played by Mimi Collins, whose real-life brother Matthew Collins also played a Picard child, Matthew Picard.
According to the Star Trek Encyclopedia (3rd ed., p. 324), Mimi Picard was six years old.
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