The two main questlines of the area "converge" at the red door. There is a second requirement you must meet for something to appear there. Since I don’t know what point of progress you are at to get that second requirement I will go over all the steps to get it
-visit the church and interact with the book, you should meet a character who gives you glasses
- give the glasses to the old woman and then get the basket from her
-use the basket on the dark green patch of grass to catch the frog, get the lure
- give the lure to the fisherwoman to make her move out of the way
-go to the new area that opens up and speak to someone you find there