What do you think is happening here?
Were it at their final parting, they should have been facing one another. Of course he is rather a cold fish, so maybe they couldn't embrace and cry on each others' shoulders as most people would do.
Well, as she doesn't have her angry face on I don't think he has told her flat out, "You can't marry that bum!"
Then again he may have just told her the Beren-like task that Aragorn must accomplish before he will bless any marriage: "Not until he becomes King of both Gondor and Arnor."
Probably he is just giving her some unwanted fatherly advice, upon the eve of her wedding. :elfroleeyes: