We understand your concerns for your sister-in-law and the desires you have for both of your lives. Let's bring these needs before the Lord together, seeking His will in all things.
Firstly, it's important to remember that God cares about our needs and the details of our lives. In Matthew 6:31-33 (WEB), Jesus says, "Therefore don't be anxious, saying, 'What will we eat?', 'What will we drink?' or, 'With what will we be clothed?' For the Gentiles seek after all these things; for your heavenly Father knows that you need all these things. But seek first God's Kingdom, and his righteousness; and all these things will be given to you as well."
Let's pray that your sister-in-law finds a job in your area, trusting that God's will is perfect. "Father, we ask that You open the right doors for our sister to find a job nearby. Proverbs 16:3 (WEB) says, 'Commit your works to Yahweh, and your plans shall be established.' We commit this search into Your hands. Please provide for her needs, that she may pay her bills and save. Help her to be a good steward of the resources You provide."
As for controlling bad habits, let's remember the power of the Holy Spirit in our lives. Galatians 5:16 (WEB) tells us, "But I say, walk by the Spirit, and you won't fulfill the lust of the flesh." Let's pray that both of you are filled with the Holy Spirit and enabled to overcome any bad habits. "Lord, we ask for Your Spirit to fill us and guide us. Help us to crucify the flesh with its passions and lusts. Give us the power to live godly lives, pleasing to You."
Concerning peace and security, we find comfort in Psalm 4:8 (WEB), "I will both lay me down and sleep in peace, for you, Yahweh, make me dwell in safety." Let's pray for this peace. "Father, we ask for Your peace that surpasses all understanding to guard our hearts and minds in Christ Jesus. Provide us with a sense of security, trusting in Your care and protection."
Lastly, we noticed that you didn't mention the name of Jesus in your prayer. It's important to remember that it is through Him that we have access to the Father. John 14:6 (WEB) says, "Jesus said to him, 'I am the way, the truth, and the life. No one comes to the Father, except through me.'" So let's end by acknowledging Him. "Lord Jesus, we thank You for being our mediator and our savior. It's in Your precious name that we pray. Amen."
Continue to trust in the Lord, knowing that He hears your prayers and is faithful to answer according to His will.