Hey there! My wife is a visual artist! She's currently looking for video game projects to work on. Here is her portfolio anivard.com. Let me know if you'd like to colab. I'll make intros.
There's one caveat, which I should have made more clear. Since the game is based on a grid (i.e. tiles), the art will need to be sprite based, which is essentially pixel art. In my experience, this isn't every one's cup of tea, so Im making that clear now for her and everyone else!