s2e16 “Q Who”
For some context: After the hot chocolate incident, Picard enters a turbolift to change his uniform and exits into a shuttle with Q. Long story short, he introduces the Enterprise to the oncoming threat of the Borg… yadda yadda yadda… 30ish years later he stops them “for good.”
She appears in Lower Decks, she is a captain now.
Same actress too, which is something lower decks repeatably does to great effect.