Nienna it is, of course.
1. See him lament in confusion, and dine in confusion within.
NIENNA: Knights say it and a queen returns to reveal her.
3. Nimble dwarf transforms into her.
4. He disperses little to swallow a preposition.
5. In turmoil, see poet trade for him.
6. In him, a plosiveless hymn meets an automobile that won't start.