Sylvester Archipelago

You could have hidden her in another cabin.

In short, either she or we (I say "we" just in case, so that before the issue of her staying on the ship is resolved, it would be better for her not to be seen by others without my presence, otherwise certain misunderstandings might arise) stayed in an unoccupied cabin (for example, cabin number 15) until morning.
In the morning, Sarael informed her that he was going to talk to the ship's owner and went to Lutiel.