Hello Di, your request is not silly. The bible says that God will perfect everything that concerns us. If it concerns you then it also concerns Him. I pray that they will discover what the mystery illness is and that it won’t be an expensive process. I pray God give you wisdom over His food and an understanding into what you should not and should be feeding him. He is one of God’s creatures and loved by His creator.
The Lord will perfect that which concerns me; Your mercy, O Lord, endures forever; Do not forsake the works of Your hands.
The Lord will not forsake the work of His hands which is your precious dog. Be at peace Di.