Watching a scary movie with you and your sister, has nothing to do with the way she is acting. Dogs do not understand scary movies. Dogs shake when they are in pain, sick, excited, scared, anxious, etc... It sounds to me like something is causing your dog pain.
We can't tell you what is wrong with her, because we are not vets and it could be a number of things. Only a vet can tell you what is wrong with her and what needs to be done to treat, whatever problem it is, that the vet finds wrong with her. Anytime a dogs behavior changes, something is wrong and you need to find out what it is and get it taken care of professionally.
You need to take her in and have her checked out by a vet and the sooner you do it, the sooner you can get her on a treatment plan, get rid of her pain and have her start getting back to her normal self. Emergency Vets are open 24/7.
Sounds like anxiety. This can be triggered by multiple things such as loud noises like thunder, fireworks, ect. If you feel this is the case talk to your vet about your options in treating/preventing theses episodes.
Sometimes oral medication is used.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.