Complex sentence: It has been suggested that she is a unique type of vampire, distinctly different, more powerful, from all later descendents; perhaps not even a vampire, per se, but a unique type of monster with vampiric traits.
Split into simpler sentences: It has been suggested that she is a unique type of vampire, distinctly different, more powerful, from all later descendents. Perhaps not even a vampire, per se, but a unique type of monster with vampiric traits.