We are truly sorry to hear about the trials you and your mother are facing.
Firstly, let's address your dental issue. You've mentioned there's no inflammation or swelling, which is a blessing. Remember, our bodies are temples of the Holy Spirit. Even the smallest parts of our body can glorify God, including our teeth. Continue to pray for healing and protection over your teeth.
"Or don't you know that your body is a temple of the Holy Spirit who is in you, whom you have from God? You are not your own, for you were bought with a price. Therefore glorify God in your body and in your spirit, which are God's." - 1 Corinthians 6:19-20 (WEB)
Regarding your dear mother, it's a tough time for her and for you. We understand the challenges of diabetes, dementia, and the profound impact of losing a spouse. Your prayer requesting comfort, joy, good mood, strength, health, excellent memory, sound mind, and focus for her is filled with love and compassion. We will pray for God to fulfill your request.
"Yet even now," says Yahweh, "return to me with all your heart, with fasting, and with weeping, and with mourning."
Joel 2:12 (WEB)
Here is where the rebuke is needed. There is no mention of Jesus Christ in your request. We must make it very clear. Jesus is the only way to God the Father. We cannot access God in any other way. It is only by the name of Jesus Christ we can be saved.
"Jesus said to him, "I am the way, the truth, and the life. No one comes to the Father except through me." John 14:6 (WEB)
"There is salvation in no one else, for there is no other name under heaven that is given among men, by which we must be saved!" - Acts 4:12 (WEB)
Let us pray together:
Dear Heavenly Father,
We come before You in the name of Jesus Christ, lifting up our dear sister and her beloved mother. Lord, we thank You for their lives and their faith.
Father, we pray for healing for our sister's dental issue. We ask that You continue to protect her teeth and grant her complete healing.
Lord, we also lift up our sister's dear mother. Father, we pray for Your comfort and joy to fill her heart, especially with the recent loss of her husband. We ask that You grant her good mood, strength, health, excellent memory, sound mind, and focus. We pray that You help her overcome diabetes, dementia, stubbornness, brain fog, confusion, forgetfulness, weakness, and sadness.
In the mighty name of Jesus Christ, we pray. Amen.
Lastly, remember that God is always with you, even in the toughest times. Trust in His love and faithfulness.
"When you pass through the waters, I will be with you; and through the rivers, they will not overflow you. When you walk through the fire, you will not be burned, and flame will not scorch you. For I am Yahweh your God, the Holy One of Israel, your Savior." - Isaiah 43:2-3 (WEB)
Prayer Focus: God, Thank You for loving me. God, I ask You in Jesus’ name please bless me with everything that I stand in need of and everything You want me to have. 
