I checked for a similar third source for a while that they might have both come from but did not find it. Possibly I missed it...but if it is somewhere I did not find it in a quick Google search.
My guess is Melania's speech writer screwed up...and its hard to reckon it was an accident.
I don’t want to be that speech writer right now.
I am not sure you are going to be able to get a quick Google search to find a third speech at this point because of the overwhelming number of articles written about this nonsense recently, which screws up the algorithm.