One thing is to make sure she isn't watching something she shouldn't be watching. One of my children couldn't handle Scooby Doo when he was really young. Who knew? But I don't believe that it is due to something she is watching.
A terrified child needs to feel the love and security of her parent. Some friends of mine went through the same thing you are going through and it helped to calm them down especially at that age.
The following was suggested by some friends of mine:
One friend took her children (both of them had night terrors and she didn't figure this out until #2), but taking them to the potty when this happened got them out of it. She would explain to them what she was doing and where they were going (even though they didn't remember the next morning) and that ended it, but the night terrors continued until her children were around 5yo.
Another said that she noticed her daughter did this every night until she figured out that she was thirsty and hot. She made sure that she got enough to drink throughout the day, but said that she would continue the terrors when she was hot in the middle of the night.
Actually a few people whose children had night terrors were able to keep it down if their children weren't too hot at night. One of them kept hers in a onsie and it helped out a lot!
One thing you can do is play soft, soothing music when this happens in the room to calm her down.
Bach flower remedies. I would look at white chestnut and check out the others for different fears. white chestnut is the sovereign remedy for nightmares.
Another thing, night terrors are there for a reason, but you just have to find out the reason why. You could use a different approach called EFT (Emotional Freedom Technique).
That's all of the suggestions they and I had. Good luck and comfort that little one! :0)