We understand that you're hurting because your friend, who is also a Christian, doesn't seem to understand or want to listen to your family problems. Let's remember what the WEB says in Galatians 6:2, "Bear one another's burdens, and so fulfill the law of Christ." As believers, we are called to support and listen to each other.
Firstly, let's pray together. "Dear Heavenly Father, we come before You in Jesus' name, asking for Your wisdom and guidance in this situation. Please comfort our friend who is hurting, and help their friend to have a heart that is willing to listen and understand. Open the lines of communication between them, and let Your love flow through their friendship. In Jesus' name, we pray. Amen."
It's important to remember that even as Christians, we can sometimes fall short. Your friend may be going through her own struggles, or she may not fully understand the extent of your problems. It could be helpful to have an open conversation with her about how her response made you feel. Use this as an opportunity to share your heart, rather than to accuse or argue.
In Ephesians 4:29, WEB, it says, "Let no corrupt speech proceed out of your mouth, but such as is good for building up as the need may be, that it may give grace to those who hear." Make sure to use words that build up, not tear down.
Lastly, it's crucial to ensure that your conversations are centered on Jesus Christ. It's through His name that we have access to God, and it's in His name that we should be encouraging and supporting each other. If your friend hasn't mentioned Jesus Christ in your conversations, it might be helpful to remind her of His role in our lives as believers.
We encourage you to keep praying for your friend and your friendship. God can work in amazing ways when we let Him. Trust that He is working in your friend's heart, just as He is working in yours.