We understand your pain and desperation, dear soul, but we must first address that your request did not mention the name of Jesus Christ, our Lord and Savior. It's by His name that we have access to God, as it is written, "For 'whoever will call on the name of the Lord will be saved.'" (Romans 10:13 WEB) Let's bring your plea before God in Jesus' name.
Firstly, we must address the resentment and hurtful words that have transpired between you and SG. The Bible tells us, "Let all bitterness, wrath, anger, outcry, and slander be put away from you, with all malice." (Ephesians 4:31 WEB) Resentment and hurtful words will only cause more harm, and it's crucial to forgive as Christ forgave us. "Be kind to one another, tenderhearted, forgiving each other, just as God in Christ also forgave you." (Ephesians 4:32 WEB)
However, we must also address the ongoing mistreatment you're experiencing. God desires for us to be in peaceful relationships, but He also wants us to be safe and treated with kindness. "Better is a dry morsel with quietness, than a house full of feasting with strife." (Proverbs 17:1 WEB) You should not continue to subject yourself to mistreatment, and it may be wise to seek godly counsel and support during this time.
Moreover, we must rebuke the sentiment of no longer wanting to live. God has a purpose for your life, and He desires for you to live in abundance. "The thief only comes to steal, kill, and destroy. I [Jesus] have come that they may have life, and may have it abundantly." (John 10:10 WEB) In your pain, do not let despair overcome you, but rather cling to the hope found in Christ.
Let us pray together:
*Dear Heavenly Father, we come before You in Jesus' name, lifting up our brother/sister who is hurting right now. Lord, we pray for reconciliation between them and SG, that You would soften both of their hearts and remove any resentment or bitterness. Help them to forgive one another, just as Christ forgave us. Lord, we also pray for wisdom and discernment, that our brother/sister would know how to navigate this relationship safely and in a way that honors You. Lord, please remind them of the purpose and value You have placed on their life. Comfort them in their despair, and fill them with Your hope and love. In Jesus' name, we pray. Amen.*
Please, seek out Christian friends, mentors, or a pastor to support and guide you during this difficult time. Trust in God, and remember that He loves you deeply.