<Tr> <Th_colspan="2"> Elena Gilbert (Salvatore) </Th> </Tr> <Tr> <Td_colspan="2"> The Vampire Diaries character </Td> </Tr> <Tr> <Th> First appearance </Th> <Td> "Pilot (TVD)" "The Red Door" (TO) </Td> </Tr> <Tr> <Th> Last appearance </Th> <Td> "I Was Feeling Epic" (TVD) "The Red Door" (TO) </Td> </Tr>

What season does elena turn to a vampire