According to Strong's and Thayer's the phrase "to be discreet" means:1) to be of a sound mind, sane, in ones senses
2) curbing ones desires and impulses, self-controlled, temperate
As women who fear God and desire to be pleasing unto Him we should strive to conduct ourselves in such a way that we meet both these definitions. Being the emotional creatures we are, this will be a challenge for many of us. We cannot use our emotions as an excuse for being irrational in our actions and speech. Self-control is taught and commanded throughout the New Testament. In Galatians 5:22, 23 it is included among the fruits of the Spirit, the fruits we should be bearing for Christ as we live here on earth. 1 Timothy 2:14, 15 talk about how the woman (Eve) was deceived and that women (in general) will be saved in "in childbearing if they continue in faith, love, and holiness, with self-control." 2 Peter 1:5-7 describes how we should grow as Christians, always adding to our character becoming more and more like Christ. Verse 6 states that we should add to knowledge self-control, and to self-control perseverance.
Being of a sound mind and curbing our desires and impulses will be of wonderful help to us as we strive to be the godly wife and mothers God commands us to be. We must strive to think soberly, carefully weighing the consequences of our decisions. This will help us be the "helpmeets" our husbands need us to be. Women who are level-headed and controlled are much easier to love and lead than ones who are irrational and impulsive. We should desire to make it easy for our husbands to fulfill the commands God has given them, rather than putting road-blocks in front of them, discouraging them from trying to serve God.
May we all strive to be discreet so that the Word of God may not be blasphemed and so that our husbands won't be able to keep from loving us and leading us in such a way that will bring us closer to God and to each other.