Maybe?
Having a healer who can sit on her face might be helpful but tris prefers more lock down and burst to peel or poke.
Unless Yuumi's numbers are excessively high like Sona's are (currently), she won't pair well with Tris.
Sivir gives Yuumi a spell shield,
Jhin gives Yuumi the absolute strongest heals possible short of a Mejais 25 stack mage or a late game Veigar (possibly Rengar),
Twitch has the camo
Ez/Lucian are nimble and don't require additional peel with high one-shot potential that Yuumi supports well. Note: Blue Build Ezreal is exempt from this and is a horrible combination with Yuumi. However, Blue Ez is just garbage anyway, in most games.
Tris MAY end up being up there in the synergy list, but I dont expect her to breach top 5.