I even tried to paint a seven on the number display.
Ha, interesting idea! I thought about messing with the display as well because I didn't immediately figure out the right solution either but when I get such ideas I always have to remind myself that the solution is probably much simpler.
At leats it weasn't as bad as getting the twin's hair.
I really had to look for a walkthrough. I had no idea I had to rewrite the bad receipe the girls gave you first.
We do get a slight hint at the Toad's place, but it only would make much sense if Mia and her sister would refuse first to give you the hair.
But they are gone until you rewrite the thing.
If there would have been a way to contact them or getting out of the house.
I agree that this puzzle was set up in a bit of an unfair way because you couldn't know that the sisters would show up after you change the recipe so at first I searched the whole house looking for hair, CSI style...once I took a closer look at the typewriter I figured it would have to be good for something, it was placed too obviously to be a mere prop.
I got very badly stuck only one time, in chapter 3 with the lemon. I tried the right thing but only in summer and I mistakenly thought I had tried it in fall already when in fact I hadn't tried that yet. It was one of the first things I tried. I figured that one needs to either sabotage the ladder, or the basket.
Spent 3 frustrating hours being stuck and started to imagine all kinds of crazy solutions. At one point, I thought that the game is trolling me with the lemon and that you can only get it by sneaking inside the bar and stealing a lemon before they juice it. I thought, maybe one has to move the arms of the big statue around so that the eyes start reflecting light into the wood pile behind the bar and then there would be a fire and I could use that as a distration. Absolute bollocks of course but I've played adventure games for 25 years and have seen all kinds of convoluted puzzles. Clearly, Fran Bow is a more logical and simpler game without such unfair wacky solutions so I was basically wasting my time. I was certain that the statue puzzle would not come into effect until the game gives you a task and some clues but due to my experience with older games that have puzzles where the clues are sometimes non-existent and only guessing and experimentation works, I got mentally off-track. This is why I hate adventure games as much as I love them, when you get stuck it's no more fun and the atmosphere is on hold.
Also, congrats, I'll mark you as solution. ;)