Yes you were a vampire, but no… you weren’t a monster. You didn’t hurt humans, you were good, surviving only on donor or animal blood. That’s why when a hunter named Gordon caught wind of you and your nest, you tried to explain your lifestyle to him. But, Gordon being Gordon, didn’t care, and he killed the rest of your nest anyways, leaving you for last.
Sam and Dean had been in town, hearing of cattle mutilations and thinking it was strange. Long story short, they met Gordon, and disagreed with him about killing your nest. They disagreed because Sam learned that you and your group didn’t harm anyone in the process, you were just surviving in peace.
As Gordon cuts you with dead man’s blood, about to finish the deed, Dean bursts in and comes to your rescue.
“Don’t you lay a damn finger on her you hear me?” says the eldest Winchester.