The woman's was commended
Piousness
6 Piousy
© Piety

The woman's piety was commended.

Explanation:

Here, you need to choose the word that exists and is usually used. When you have a list that consists of words and groups of letters that resemble words but don't exist and need to choose an actual word, you can use a dictionary. Dictionaries are alphabetically arranged listings of words that contain different information about them, such as their definitions, examples, origin, and pronunciation. If you find a word in a dictionary, it definitely exists.

In most dictionaries, you will encounter the word piety. Piety can be defined as devotion and reverence to religious practices and God. Someone who has this trait is pious.

The word piousness can be encountered in some dictionaries as well, but piety is used more often. Piousness can also have a negative meaning and is used to refer to someone's hypocritical self-righteousness.

Piousy doesn't exist as a word.

This is why piety is the best option.