Katherine
There's more, probably, than any person could learn in a single lifetime. I've had nearly three centuries and I'm still learning.
We have vervain/verbena where I come from, although I don't know of any vampire-specific spells it's used for. Just magic in general. I'll take a look in the forest tonight, see if I can find any for you.
I've had periods of fear -- the hundred or so years I spent in a hell dimension springs to mind, among other things. I don't know if I have any good advice for coping with the fear. Being able to compartmentalize helps, but that can take you down some dark paths too. All I can tell you is that you can't lose hope. You've been suffering for a long time, and you're lost so much. I'm sure you've felt like giving up a lot of times, but you're still here. There's a reason for that. I wish I could tell you I know the reason, but I have to believe that it's a good one. That something's looking out for you and wants you to be able to live a good life. You said there was only one vampire cure in your world and you got it -- The Powers That Be wouldn't let that kind of thing happen lightly. That cure was meant for you. And I'll do my part to make sure you get to enjoy it.
And if you're worried about a time when you won't be able to ask for help, that's what I'm here for. I have a pretty good sense of when people are in danger. I'll be watching out for you, and if you go quiet suddenly, I'll know something's wrong. I'll go looking for you. I promise. We'll get you through this.