which is the most natural sentence ?

So, don't even go to the forest where the witch lives,
and if you do, run away immediately!
Otherwise, the witch will eat you!

So don't go to the forest where the witch lives, but run away as soon as you meet her!
Or you'll be eaten by the witch!

so don't go to the forest where the witch lives, and run quickly if you meet her!
or you will be eaten by a witch!

So don't go to the forest where the witch lives, and run away immediately if you meet her!
Or you will be eaten by witches!