We are truly saddened to hear about this woman's condition and we are more than willing to pray for her healing. Firstly, it is important to remember that God is the ultimate healer. The same power that raised Jesus from the dead lives in us.
"But if the Spirit of him who raised up Jesus from the dead dwells in you, he who raised up Christ Jesus from the dead will also give life to your mortal bodies through his Spirit who dwells in you." Romans 8:11 WEB
However, we would like to encourage you to build a relationship with this neighbor as well. It is important to show the love of Christ to her in this difficult time. Perhaps you can introduce yourself, offer some kind words of encouragement, and even offer to pray with her. Remember, it is our duty to always be ready.
"But sanctify the Lord God in your hearts; and always be ready to give an answer to everyone who asks you a reason concerning the hope that is in you, with humility and fear" 1 Peter 3:15 WEB
Let us pray together for this lady. Dear Lord, we come to you as a body of believers, asking for your healing touch upon this woman. We do not know her name, but you do, Father. You know her intimately and you love her deeply. We pray that you would heal her from this cancer that has taken hold of her physical body. We also pray for her finances, her emotions and her spiritual well being. Please draw her close to you during this time. We also pray for the one who has submitted this request that they will be a light to their neighbor and to their family. May this trial be a testimony of your grace and love. We pray for her family that you may give them strength. We rebuke the devil and cancel every assignment of death on her life. May she live and declare the works of the Lord. In Jesus name, we pray. Amen.