If Lucia says “This sure is a weird spot for a tree to be growing” with no follow-up, it may have to do with your Sensitivity, which you can check by using Mimine in your inventory. If it’s below 20, you should definitely try to get it up.
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There is a patch with instructions included in the guide, available here
Speak to King Premium once you have all of them. If you missed an item that isn’t covered by this patch, I suppose your only option is the debug menu.