The young woman was found down in the well with her matted with mud, her neck was broken, and her shoe was missing.

And yet there was no water in the town, not even a drop. The town well was dry. That means that her hair couldn’t have become matted with mud from a fall into the dry well.

The conclusion is that she must have died somewhere where there was water, and was dumped into the well afterwards.

Since there is no water in the town, she must have been killed before she got there, making the boyfriend’s story a lie.