Kindly take neurologist opinion and take EEG test.

As per your question it seems to have biological reasons as well. The chances may be that it is at a neurological level. Still in my opinion we can still try to work work on her beliefs about this issue. Having faith in herself and in the process she can work on this pattern. If really it is from childhood and it is at the sleep time there must be a good lot of belief stored in her mind regarding this. I am a psychologist and not a psychiatrist. Only a psychiatrist can prescribe a medicine. Yet I have faith in my practice. If she is able to take charge of her belief system then there's a great possibility of this problem going away. I need to know more about what type of vibrations these are. Great if you can call me on my phone Thanks