That is overall correct. Based on what I am reading, once the peach is eaten, all travel through the Hedge counts as walking on a trod. Since trod rating is based on distance, and the whole Hedge would count, it would be a level 5 trod. On a trod, Laura would not need to roll to get to her destination, unless there is a time limit, which may exist depending on when she decides to go... such as if she were to try to get back "today" in time for her "date".