Hi, welcome to the forums, your symptoms are suggestive of rapid eye movement (REM) related parasomnias involve the intrusion of the features of REM sleep into wakefulness (eg, sleep paralysis). It is a type of sleep disorder.
Few of the individuals are known to suffer from parasomnias esp. when they are on non-benzodiazepine sedaives, drug abuse, sexual abuse etc. otherwise no definitive cause exists in few individuals apart from stress, positive past history of abuse etc.
The associated symptoms with the following disorder are confusional wakefulness, sleep paralysis, nightmares and night terrors. This can occur in any sleep stage (REM and non-REM stage) . Do not panic when you have the attack.
To rule out parasomnias you need to undergo Polysomnyography and sleep analysis. she needs to take out time for further evaluation. Ask her to sleep with light on. Short term benzodiazepine against prescription will help her. I suggest you to consult her to a physician or sleep specialist. Take care and regards.
ok thank you for the help, its scary but yet interresting as of like we are choosing for this lol, not many people i hear get this
I suffer from the same thing you do. I find when I sleep on my side instead of my back it usually doesn't happen. Another tip is to try to move something small like your pinky instead of your whole body all at once. Keep calm, relax it only makes it worse when you struggle. Work your way from you're finger to your hand to your arm usually you will wake up after that. If not continue on through out your body. I am no expert but I know your body produces a chemical that paralyzes you so you don't hurt you're self ( like if you dream you stand and run this chemical insures you only dream that). Sometimes the brain produces too much so you're body is still paralyzed when you wake. Thats the basic idea of it, like I said I'm no expert. If you still can not wake consult a neurologist.
Best wishes friend. I hope I helped you, even now these things scare me (I call them night terrors) even though I have had them all of my life. Don't let it scare you though, I know its hard sense your first instinct is to panic. Good luck.