Dark Die-mention Yorba Linda's Pink Lady

The Dark Die-Mention team searches for the elusive "Pink Lady" said to roam the Yorba cemetery. Alvina De Los Reyes is believed to be the resident ghost, but there are some conflicting facts that lead us to believe this entity might not be hers. Was a young woman killed in a carriage accident on the way home from a dance and was she wearing a pink gown? We know Alvina died from giving childbirth, so who is this elusive "Pink Lady"?