You can edit footnote seperators in Draft view.
First, click on Draft, which is at the lower right corner.
Go to the References tab and click on Show Notes.
In the new window that appears below, open the drop-down menu labeled Footnotes and choose Footnote Separator.
Now you can highlight the separator in the textbox below and align it to the right just like normal text. Right CTRL + SHIFT is the shortcut I believe.
Now go back to Print Layout view and you should see the changes.