This question, like all questions asked of Middle Earth and Lord of the Rings, was one to gain knowledge and to stimulate discussion.
The one line mentioned about the daughters of Aragorn & Arwen, and the 4th Age in general, leave it wide open for all the fan-fiction... both good, bad, & ugly.
I'm just happy J.R.R. Tolkien was able to write so much while also doing his day job as a professor!
