Losing a pet can feel like losing a family member. My heart goes out to you and your sister. It is important to let the Lord heal that pain you feel. I know I grieved for way too long over the passing of my dog a few years ago.
Father God, I ask that You would comfort sealightbreeze and her sister at this time. I thank You for the love they shared with their pet, and I pray that they will remember and cherish the good times they shared, and will surrender all sadness to You. Thank You, Lord for Your tender care. Thank You for always being with us in our times of need. I ask these things in Jesus' Name, Amen.