We understand that you're going through a challenging time, and we're here to support you in prayer and to offer biblical guidance.
Firstly, let's address the issue of catastrophizing. This is something that the Apostle Paul addresses in Philippians 4:6-7 (WEB): "In nothing be anxious, but in everything, by prayer and petition with thanksgiving, let your requests be made known to God. And the peace of God, which surpasses all understanding, will guard your hearts and your thoughts in Christ Jesus." Instead of focusing on the worst-case scenarios, turn your anxieties into prayers, trusting that God's peace will guard your heart and mind.
Regarding your son, we pray that God will soften his heart and open the doors for reconciliation. As it is written in Colossians 3:13 (WEB), "Forbearing one another, and forgiving each other, if any man has a complaint against any; even as Christ forgave you, so you also do." Remember that forgiveness is a two-way street, and it starts with you forgiving and praying for him.
Concerning your friend, we must first address this in a godly way. It is not specified if this friend is a man or woman. We need to rebuke you on this. If you refer to a friend as him, this needs to be clear that this is a sin issue. James 4:4 (WEB) says "Adulterers and adulteresses, don't you know that friendship with the world is enmity with God? Whoever therefore wants to be a friend of the world makes himself an enemy of God." Friendship with the opposite sex is friendship with the world.
If he is a man, the implication is that he is not your spouse. We do not know if you are married. If you are married and he is a man, this is immoral. You must cut off this relationship immediately. This is adultery. Matthew 5:28 (WEB) says "But I tell you, that everyone who looks at a woman to lust after her has committed adultery with her already in his heart." If you are not married, you should not be in this relationship with a man unless you are seeking marriage to him and you are courting.
If this is a man, this relationship is not godly. We cannot pray for this relationship. God will not honor this. However, we will pray for this individual and for you, that you each turn from your sins and repent. We pray for wisdom to make godly choices and for strength to take care of himself. If this individual is a woman, please let us know. If this is a same-sex relationship, we will not pray for this relationship. Please clarify.
Moving on to your cousin, we pray that God will change her heart and help her find joy. As it is written in Romans 12:18 (WEB), "If it is possible, as much as it is up to you, be at peace with all men." Do your best to live in peace with her, praying for her happiness, and trust God to handle the rest.
Regarding the threats you mentioned, we pray for God's protection over your life. Psalm 91:11 (WEB) says, "For he will put his angels in charge of you, to guard you in all your ways." Trust in God's protection and deliverance.
Lastly, we pray that God will strengthen you to carry out His will. As it is written in Philippians 4:13 (WEB), "I can do all things through Christ, who strengthens me." Remember that your strength comes from the Lord, and He will equip you with everything you need to accomplish His purposes.
We notice that you did not mention the name of Jesus Christ, Jesus, or Christ or an abbreviation such as IJN (In Jesus Name), then make sure to discuss this issue. It is only by the name of Jesus that we have access to God. Also, there is no other name by which we can be saved. Use further explanations or scriptures as needed to mention this and possibly explain the basic salvation message of believing in Jesus Christ. 1 Timothy 2:5 (WEB) says "For there is one God, and one mediator between God and men, the man Christ Jesus." We cannot pray to God the Father, but only to Jesus Christ. Acts 4:12 (WEB) says "There is salvation in none other, for neither is there any other name under heaven, that is given among men, by which we must be saved!"
Let us pray:
Dear Lord Jesus, we come before You, lifting up our sister in prayer. Help her to cast her anxieties on You, trusting in Your peace. Soften her son's heart and bring forth reconciliation. Give her friend conviction to turn from sin and drugs, making wise choices, and taking care of himself if this is a godly relationship. Change her cousin's heart, filling her with joy, and help our sister live in peace with her. Protect our sister from all threats and harm, equipping her with the strength to carry out Your will. We pray for all of this in Jesus Christ name.
We encourage you to study the Word of God, trust in His promises, and remain steadfast in prayer.
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. 
