Her recovery is 'unlikely'. = It is 'unlikely' that she will recover. = She is 'unlikely' to recover.
In the 'unlikely event that' I win the lottery, I will pay off the mortgage.
It is 'unlikely' that the company will survive more than another year.
(..) ... whispers of a nameless fear. And the Ring of Power perceived... ...its time had now come. It abandoned Gollum. But something happened then the Ring did not intend. It was picked up by the most unlikely creature imaginable. What's this? A Hobbit. Bilbo Baggins of the Shire. A ring. Lost! (..)2001 The Lord of the Rings: The Fellowship of the Ring