Hi Rachel. I found this Christening in the BVRI 2, don't know if its any good to you:
TRELFA, Sarah Christening
Gender: Female
Christening Date: 18 Aug 1844 Recorded in: Derby, Derbyshire, England
Collection: St Werburgh
Mother: Elizabeth TRELFA
Source: FHL Film 1041167 Dates: 1843 - 1857
Hope it helps. It's the only one listed.