Sorry for the late reply, I ended up finding it. posted wrong link, lost the actual link again lol. While searching I actually found one of your stores I read years ago, Abysm's Veil- Continuing the story. (WIP) Last update 11th August
Okay so In the story I think you stumble upon a mermaid and you end up helping her, then there’s this part where your village? Has a party and you bring her to it with her in a tub, the game also had something to do with constellations, at some point you end up going somewhere and meating each constellation.
I found it 
Whispers of the Stars (WIP) [On Hiatus] it’s a great story!