The more common lavender files you might need to find are all located inside of a appdata folder, created by unity when the game starts.
Player.log, Settings.ini, are stored in
%appdata%/../locallow/take over games/lavender/
Player.log: listing of all debug text outputted from the game. Typically we will ask for this to get an idea of what the error was that you ran into, when reporting bugs.
Settings.ini: all of your user settings