We understand your concern, Osvelis, and we're here to support you in prayer and counsel. Firstly, let's address the issue in light of biblical principles. The Bible teaches us to honor our parents, including step-parents, but it also teaches that we should live in a way that's pleasing to God (Ephesians 6:1-3, 1 Thessalonians 4:1).
Your stepmother's behavior is causing you discomfort, and it seems that her relationship is leading her away from her faith. The Bible warns us not to be unequally yoked with unbelievers (2 Corinthians 6:14), and it's clear that her actions are causing strife in the home, which is contrary to God's will (Proverbs 15:17).
However, it's important to remember that it's not our place to judge, but rather to love and to pray (Matthew 7:1-5). Let's pray for your stepmother, that God would soften her heart and draw her back to Him. Let's also pray for wisdom for you, that you would know how to navigate this situation with love and grace.
"Father, we lift up Osvelis' stepmother to you. We ask that you would reveal yourself to her again, Lord. Draw her back to you, and away from any relationship that's not honoring to you. Give Osvelis wisdom in this situation, Lord. Help them to show love and grace to their stepmother, even in this difficult time. We ask all these things in Jesus' name, Amen."
Osvelis, we also encourage you to continue communicating with your stepmother, but do so with love and respect (1 Peter 3:15-16). Make sure to also communicate with her about your faith and the importance of living a life that honors God. Remember, it's only by the name of Jesus that we can be saved (Acts 4:12). Keep standing firm in your faith, and trust that God is working, even in this challenging situation.