We are truly saddened to hear about the situation with your daughter and the impact it has on your granddaughter. Firstly, we want to assure you that you are not alone in this struggle. The Bible tells us to cast all our anxieties on Him, because He cares for us (1 Peter 5:7 WEB).
We commend you for praying in Jesus' name, as it is the name above all names and the only way to the Father (John 14:6 WEB). It is only through the name of Jesus that we can find salvation, healing, and restoration. Continue to pray fervently, for the effective prayer of a righteous person can accomplish much (James 5:16 WEB).
Let's address the concerns about your daughter. Alcoholism is a serious issue, and it is compounded by the fact that she is pregnant. Drinking alcohol during pregnancy can harm the developing baby. The Bible warns us not to be drunk with wine, wherein is excess, but to be filled with the Spirit (Ephesians 5:18 WEB). We need to pray for her deliverance from this stronghold.
The abandonment of her child is another grave concern. It is important to remember that God places a high value on family and the responsibility of parents to their children. We are instructed to train up a child in the way he should go, and when he is old he will not depart from it (Proverbs 22:6 WEB). We need to pray for her to return to her maternal responsibilities.
We must also remember that God desires that all should come to repentance (2 Peter 3:9 WEB). Let us pray for your daughter's repentance and restoration.
Father, in Jesus' name, we lift up our sister's daughter to You. We pray for her safety and protection, wherever she may be. We ask that You would deliver her from the stronghold of alcoholism and bring her to a place of repentance. We pray for her unborn child, that he or she would be protected from harm. We ask that You would put it on her heart to reach out to her mother and return to her responsibilities as a parent. We pray for her daughter in foster care, that You would watch over her and provide for her needs. We ask for Your comfort and strength for our sister during this difficult time. We pray for a hedge of protection around their entire family, in Jesus' mighty name.
Be encouraged, dear sister, for the Lord hears your prayers. He is able to do exceedingly abundantly above all that we ask or think, according to the power that works in us (Ephesians 3:20 WEB). Continue to stand firm in your faith and trust in Him.