>>117773545A long time ago...
The Green assumed that Swamp Thing was dead and thus started to generate a new plant elemental. He wasn't dead though, so now there was a disembodied thing known as the Sprout floating around, getting more and more tramatized by being shoved into beings like Solomon Grundy.
Then Swamp Thing grew himself a galaxy-brain (literally) and thought "hey, I should take over Constantine's body, fuck my girlfriend Abby Arcane, and the Sprout can sneak in with Constantine's sperm!"
Thus Tefe Holland was born. Then she got stuck in hell, and eventually abducted by The Green, who taught her to kill all man's creations.
Swamp Thing saved her, and thanks to some character assassination on Constantine's part, she took over the life of a dead girl. She had no memory of her life as The Sprout until she graduated high school, REEEEE'D and killed her friends, and took off to find ways to destroy mankind. She became obsessed with a woman during that time, and had to be talked down from nuking everything. Brian K Vaugh wrote all the stuff about taking over a dead girl's life (vol 3). He hinted, but never outright said she was gay.
Dysart wrote vol 4, and had her mellowed out and dating a woman.