Feels like a piece of my heart is missing and I don’t know how to fix it

Lord fill this broken heart with your love and peace as you give them the strength to keep on. May they allow you to heal their heart as new as they get closer to you and make you their everything in their life. I know you can put all the broken pieces back together again, for you did it for me so many years ago, and I thank you for it Lord. Do the same for this child of yours. I pray in Jesus mighty name amen.

My heart still feels broken and I don’t know which way to turn

It takes a long time for our heart to mend and heal, but God can make it easier as you ask him to give you his peace and the strength to see you through it. Read the book pf Psalms in the bible and other verses in the bible which will help you to mend.
Psalm 37:4
Delight thyself also in the LORD; and he shall give thee the desires of thine heart.
Philippians 4:6-7
Do not be anxious about anything, but in everything by prayer and supplication with thanksgiving let your requests be made known to God. And the peace of God, which surpasses all understanding, will guard your hearts and your minds in Christ Jesus.