"Elder" is the name of the series' main antagonist. I understand why this can be confusing- he hasn't shown up until now. I wanted to make reference to him and build him up for the final page.
Kei is pretty much just spouting exposition for the audience's benefit, explaining that she knows what Elder's plan is: if his goons succeed in capturing her, he plans to enslave the people of the island in her absence.
It's also explaining to the audience why she didn't trade herself for the hostage, as I thought that might have been a little confusing.
And in fact, speaking of our main antagonist...
Last page. Gotta ink these and then start coloring it.