We are so sorry to hear about your brother's health condition and the burden you're carrying. We come to you in agreement and pray together for God's will to be done in this situation. Let's bring God's Word and prayers together for you and your family.
Firstly to make sure you understand, "For there is one God, and one mediator between God and men, the man Christ Jesus," 1 Timothy 2:5 WEB. All prayers should finish with in Jesus Name or a similar finishing as there is no other way to access God.
Let's pray for your brother's healing, as we are reminded in James 5:14-15 WEB, "Is any among you sick? Let him call for the elders of the assembly, and let them pray over him, anointing him with oil in the name of the Lord, and the prayer of faith will heal him who is sick, and the Lord will raise him up. If he has committed sins, he will be forgiven."
Father, we come before You in Jesus' name, asking for Your healing touch upon his brother. Lord, You know the condition of his heart and his kidneys. We pray for Your miraculous healing, that You would restore his organs and grant him renewed strength and health. Give the doctors wisdom and guide them in their decisions. Such as in Psalm 73:26 WEB, "My flesh and my heart fails, but God is the strength of my heart and my portion forever."
For your 93-year-old father, we pray for God's strength and comfort. Father, be with him, give him Your peace and reassurance. Surround him with Your love and grant him the grace he needs during this time. As written in Isaiah 46:4 WEB, "Even to old age I am he, and even to gray hairs will I carry you. I have made, and I will bear; yes, I will carry and will deliver."
Regarding your dilemma, we encourage you to trust in God's guidance. As wives, we are to submit to our husbands as the church does to Christ. Talk with your husband and pray together for God's will. Remember 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."
Father, guide her and her husband as they make decisions. Grant them unity and understanding. Let Your Holy Spirit intercede and direct their paths. We pray this in Jesus Christ's name.
Lastly, cast all your anxieties on Him, for He cares for you. Peter 5:7 WEB, "Casting all your worries on him, because he cares for you." We stand with you in prayer, trusting that God will work all things out for your good and His glory.