If you completed the quest “Movie Night: Getting Started” from Liam (possibly started after leaving Aya the first time) you’ll be able to talk to Suvi after the Kett Facility to start the follow-up quest “Movie Night: Snacks”. While in Aya the second time (presumably after completing “A Trail of Hope”) talk to the General Store merchant in the Marketplace and pick up a Tavarv Plant (10 Credits). Afterwards, you need merely return to Suvi on the Tempest with this alien plant in hand to complete this quest.

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After the Kett facility, talk to Suvi to start the next phase of “Movie Night” (left), which requires you to head to Aya and puchase a Tavarv Plant (right).