How do I pass the test?

Hint 1 of 12:

She'll tell you the rules.

Hint 2 of 12:

The information you need is on page 7 of the Liber Ex Doctrina.

Hint 3 of 12:

Here are the answers to the riddles. To find the flowers, look in the book.

Hint 4 of 12:

"For its sweet sake..." -- True Love

Hint 5 of 12:

"Known to the priest..." -- Celibacy