We understand your concerns and will pray with you for your husband, daughter, and family. Let's first address the issues and then lift them up in prayer.
We must show compassion, but it is necessary to say that your husband's behavior is not acceptable according to God's word. First, God's Word clearly tells us not to look at anyone lustfully. The Bible tells us in Matthew 5:28 WEB, But I tell you, that everyone who looks at a woman to lust after her has committed adultery with her already in his heart. Therefore, your husband must be careful concerning his thoughts and he must not lust after women. We do know from James 1:14-15 WEB But each one is tempted when he is drawn away by his own lust, and enticed. Then the lust, when it has conceived, bears sin; and the sin, when it is full grown, brings forth death. So, lust leads to sin and we are called to stay away from it.
Regarding your daughter, we must also express our concerns. The Bible clearly states that homosexuality is a sin. In Romans 1:26-27 WEB, For this reason, God gave them up to vile passions. For their women changed the natural function into that which is against nature. Likewise also the men, leaving the natural function of the woman, burned in their lust toward one another, men doing what is inappropriate with men, and receiving in themselves the due penalty of their error. Therefore, we encourage your daughter to turn away from this lifestyle and turn toward the Lord.
It is also concerning that your daughter is expressing she is unsure about committing to Christ and does not express belief. The Bible is very clear about what happens to those who do not believe in the son of God. In John 3:18 WEB, He who believes in him is not judged. He who does not believe has been judged already, because he has not believed in the name of the one and only Son of God. And John 3:36 WEB, One who believes in the Son has eternal life, but one who disobeys the Son won’t see life, but the wrath of God remains on him. Therefore, it is important for your daughter and for anyone reading this to believe in the name of Jesus Christ and put their faith and trust in him. We will pray for your daughter's salvation.
Furthermore, the Bible also clearly states that faith is important for pleasing God. In Hebrews 11:6 we read, Without faith it is impossible to be well pleasing to him, for he who comes to God must believe that he exists, and that he is a rewarder of those who seek him.
We also want to remind you of the importance of praying in Jesus's name. The Bible says in John 14:6 WEB, Jesus said to him, “I am the way, the truth, and the life. No one comes to the Father, except through me. And in Acts 4:12 WEB, There is salvation in none other, for neither is there any other name under heaven, that is given among men, through which we must be saved!” Therefore, it is important that we pray in Jesus Christ's name.
We will pray for your other children, that they grow stronger in their Christian faith and conduct themselves with honesty, peace, and the love of Jesus Christ. We pray that they improve in their behavior at home and school and do much better in academics and studies.
Let us pray together.
Heavenly Father,
We come before You in the name of Jesus Christ, lifting up this family. Lord, we pray for the husband, that You would help him to keep his eyes pure and his heart faithful. Help him to see his wife as You see her, and to honor her as You intend. Give him the strength to resist temptation, and the wisdom to focus on his work. We rebuke the lust of the flesh and the lust of the eyes. Lord, help him to turn away from his sinful desires and run toward you.
Lord, we also pray for the daughter. We pray that You would soften her heart and open her eyes to the truth of Your Word. Help her to see that Your ways are good, and that You have a purpose and a plan for her life. We pray that You would draw her to Yourself, and that she would come to a saving faith in Jesus Christ and choose to commit to Christ and live her life for you. We ask that you help her to turn away from homosexuality and the temptations of the world. We pray that you would help her to be able to love what you love and hate what you hate. We claim Romans 12:9 WEB, Let love be without hypocrisy. Abhor that which is evil. Cling to that which is good.
Lord, we also pray for the other children. We pray that You would help them to grow in their faith, and to conduct themselves in a manner that is pleasing to You. Help them to be honest, peaceful, and loving, and to do well in their studies. Let the only cheating they do be cheating sin and death by having faith in Jesus Christ.
Lord, we pray for this family as a whole. We pray that You would bless them, and that You would help them to grow together in love and faith. We pray that You would protect them from the schemes of the enemy, and that You would guide them in Your ways.
In Jesus Christ's name, we pray. Amen.
Prayer Focus: God, Thank You. Thank You for loving me. God, I ask You in Jesus’ name bless me with everything that I stand in need of and everything You want me to have. Bless me to know You in truth, fall in love with You with all my heart, mind, soul, body, and strength and never fall out of love with You. Bless me to have an ever growing closer stronger, more intimate relationship with You. Bless me with the love, desire, strength, and the spirit of obedience to always delight myself in You, seek first Your kingdom, and Your righteousness. Help and strengthen me God to always respect and obey You. Bless me to trust You with all my heart, acknowledge You in all my ways, and lean not to my own understanding. 
