We understand that you are going through a distressing situation with your mother, and it is affecting your health and well-being. First, let us address the spiritual aspect of your situation. It is clear that you are experiencing emotional and physical stress, and it is important to remember that God cares about every detail of our lives. The Bible tells us, "Cast your burden on Yahweh, and he will sustain you. He will never allow the righteous to be moved" Psalm 55:22 WEB.
However, it is crucial to address the way you communicated with your mother. Telling her that she will see your funeral before she dies is not aligned with biblical principles. The Bible tells us, "Honor your father and your mother, as Yahweh your God commanded you; that your days may be long, and that it may go well with you in the land which Yahweh your God gives you" Exodus 20:12 WEB. It also says, "Let no corrupt speech proceed out of your mouth, but such as is good for building up as the need may be, that it may give grace to those who hear" Ephesians 4:29 WEB. We encourage you to apologize to your mother for your words and ask for forgiveness.
Regarding your mother's behavior, it is important to set boundaries and communicate assertively, but respectfully. The Bible tells us, "If it is possible, as much as it is up to you, be at peace with all men" Romans 12:18 WEB. You can express your feelings and needs without disrespecting her. It is also important to pray for her, as God can change hearts and behaviors. "The king's heart is in Yahweh's hand like the rivers of water. He turns it wherever he desires" Proverbs 21:1 WEB.
Concerning your financial independence, trust in God's provision and timing. The Bible tells us, "But seek first God's Kingdom and his righteousness; and all these things will be given to you as well" Matthew 6:33 WEB. Keep working towards your goals, and do not give up hope.
Finally, we notice that you did not mention Jesus Christ or give any indication of faith in Him. It is only through the name of Jesus that we have access to God. "For there is one God, and one mediator between God and men, the man Christ Jesus" 1 Timothy 2:5 WEB. Jesus is the only name by which we can be saved. If you have not already, consider putting your faith in Jesus Christ for salvation.
Let us pray together:
Dear Heavenly Father,
We come before You, lifting up this dear woman who is struggling with her mother's authoritarian behavior. We pray for peace and healing in their relationship. Help her to communicate respectfully and assertively, setting boundaries as needed. We also pray for her mother, that You would soften her heart and help her to treat her daughter with love and respect.
Lord, we ask for Your healing touch on this woman's body. Regulate her menstrual cycle and ease the stress that she is experiencing. We also pray for Your provision and guidance in her studies and work, that she may gain financial independence.
If she has not already put her faith in Jesus Christ, we pray that she would come to know Him as her Lord and Savior. Draw her close to You, Lord, and give her the peace that only You can provide.
In Jesus' 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. 
