I have had to do some difficult funeral sermons, but the death of a stillborn was new to me. Here is an outline that may be of help to you.
Funeral, Sorrow, God's Presence, Stillborn
Christian/Church Of Christ
A funeral for an infant who has died at birth, shortly after birth, or was still born.
2 Samuel 12:22-23
Child, Death, Funeral, Stillborn, Funerals Christian, Funerals Non-Christian