Sadly it got lost in a file cleanup... So I've had to rewrite the whole damn thing from scratch... :(
Is there a particular point your stuck at or need help on? I can post what to do + outcomes here in the meantime.
Oh Isabelle?
So you'll need to head to the Castle. To get the key, you need to get the blue slime from the tent in the Forest. Beat her or lose to her 3 times. If you eat her you still get the key but I'd advise taking her with you. If you take her with you, wait till it's a day divisible by 3 and she'll ask for your help. Complete the quest and she'll give you the key as a reward. You can now access the castle and beat the Queen, which then opens up the next area to go (once you do a couple of things first).
The guide is almost ready. But I'm just gonna write it for the next version which will come out in a couple of weeks.