I too had seen that transcription which sent me to the originals on fiche but as I said my copy is extremely difficult to read.
I wonder whether a request for someone to look at the original written entry in Somerset Record Office might solve the problem. My interest is in the PUDDY family as my husband's grandmother was a PUDDY. If Sarah was that young it might merit a comment in the Register but so might the age of a child being baptised.
Pat