Hello Bryan,
Pahes has not such a function. All you can do is to place a link by hand into the document package folder. This means to show the document in the Finder, do a control-click onto it's icon and choose the item "Show Package Contents" from the appearing menu. Now you will see a new window with all the content of the document in it. Take the images out and place a link with the exact name plus ending of the image into the folder. But be sure to place a symbolic link (type into Terminal: "ln -s <path>/<imageName>", when you have navigated with: "cd <documentPackgeFolderPath>" into the document package folder) or this will not work.
If you think this is the kind of way that works for you than use it. But I think this is no way for a production workflow.
