The dragons were back from their scouting expedition. Mignon, the pack's favorite, brought exciting news for further exploration of the island: he had discovered a herd of wild horses a day's march away.
After that day's march, the Elves found the horses grazing in an open plain.
Isolde knew how to approach the horses and picked out her favorite.
A white horse caught her eye, and when she approached it, it stood still. Isolde whispered softly to it, "I don't want to possess you. I won't give you a name. But I would like to use you and your group for a while."
After meeting the horse, an older dragon called her. "Albion, I'm so glad to see you." And Albion had good news too: half a day's horseback ride away lay a potential new home. There was a lake with an island in the middle, densely vegetated.
That was the news Isolde needed. She ordered everyone to mount their new horses, and they galloped off.
The island looked beautiful. Isolde called her bodyguard: "I want everyone to stay here. I'm going to the left in the distance, hoping there's a shallower passage."
Which turned out to be the case. Her horse could wade through knee-deep water until she reached the island in the woods, in what turned out to be a wide stream.
Densely vegetated, fresh water, hidden from view, and in most places a stretch of water deep enough.
This was the place. Here Isolde would found her own dynasty. And hopefully remain hidden forever.