The Virtuous Wife (verse 30)

Proverbs 31:30 NKJV
Charm is deceitful and beauty is passing,
But a woman who fears the LORD,
she shall be praised.
Charm: the power or quality of delighting, attracting, or fascinating others. (Google.)
Passing: the passage of something, especially time. (Google.)
Fear: reverential awe.

This wife knows that charm is insincere, and that (external) beauty suffers from the passage of time. She knows that fearing the LORD is the best thing to be praised for.