Leaving Earth — Liza O'Connor

Billionaire David Ross has created a sanctuary for an alien species that superficially resembles Earth's black panther. This race is superior in both strength and longevity to humans. David's plan is to seed a new world with the offspring of these aliens and selected humans. Contrary to the covenants of the project, he sends a special young woman named Jesse to the island against her will. Her arrival changes more than he planned.