She slows down  and observes carefully as she approaches the strange effect. The wards she knows couldn't do this at all.

Their effect seems to be intended to misdirect; ships will run aground or sink, flying things will be sent in circles or find themselves turned around.

She attempts to fly through anyway. It doesn't work.

...Perhaps if she goes high enough it'll stop. It's not like she needs oxygen.

Indeed, the effect lessens higher up and by the time she's ten miles above the ocean there's practically nothing left of it.

So she can fly into this land easily enough.

She uses her telescope again, trying to identify the city the other elves mentioned.

There's a harbor on the coast, yes. 

She descends toward it.

...Shouldn't the suns have stated warming up by now?

The sky remains dark and cold.

...Unnerving.

And those giant trees the elves mentioned aren't glowing either.

She lands outside the harbor city's walls and spends a short while re-reading through the notes on this place she's taken so far by the light of red-hot rocks.

And then a voice echoes in her head, not coming from any particular direction.

"You trespass in Valinor, stranger."

"Hello. I was told I was trespassing in the other continent as well, by Morgoth. Am I not allowed to exist? I am entirely new in this land, and seek only to understand."

"Valinor is sealed against strangers, as they might serve the Enemy who has done us such great griefs. And none are ever welcome here without invitation."

Such paranoia. "The Enemy is Morgoth? I have sucpicion of him myself. May I stay just long enough to have a conversation and hopefully find the truth?"

"You can converse with us outside Valinor. Depart now."

"I did not know that." She rockets into the sky and back out to sea. Not bothering to refrain from breaking the sound barrier this time, since they want her out so eagerly.

Then, floating two miles above the ocean's approximate halfway point, "Can you still hear me?"

"Yes. Now declare yourself."

"I am the Fate, Mountain. I appeared on the ocean, not deliberately, a few hours ago, and am still trying to learn about this land. It seems troubled in several ways."

"Yes. The Enemy has dealt us a grievous hurt and destroyed the light of this world. He has marred also the hearts and minds of some of the greatest of the incarnates. Did Eru send you, stranger?"

"My form was destroyed and when I manifested again, which I do by myself usually, it was in this world and not my own. It looked like a random accident to me. I don't know if Eru could have arranged it, but if that seems like it might be in his power, perhaps."

"In that case you are welcome, though not in Valinor itself lest we be deceived or people who have been greatly injured suffer another injury."

"I will stay out of Valinor barring a great emergency, and then I will endeavor to explain the problem and ask permission first. But you say Melkor truly is as foul and evil as the elves claim."

"Please let me know if my questions become tiresome. How many others like you and Melkor are there? Who is Eru? The boats on the far edge of the sea. They were going to be burned and now, I believe, lie abandoned. Who do they belong to?"

"There are many thousands of us, the greatest of which are called the Valar. Eru is the creator of the world, and all occurs according to his design. The boats you may return to Valinor; they are a treasure of our land."

She kind of doubts this Eru brought her here. No way to tell though.

"Yeah, I thought so... I will return the boats. And I would appreciate the chance to speak to the other half of their host, after, if it can be arranged without my entering Valinor."

"They departed our lands; you can speak with them as you wish."

"Ah. Thank you. Where did they depart to? Does the ward that tries to turn me away mark the extent of Valinor so I need not worry about entering it accidentally?"