Hi,
I also think it is a brain related problem and some more neuro tests like MRI may be required.I do not quite understand why should one fake such situations. Also, you may show her to a cardiologist and check if she has any problem with the heart. Some times problems with circulation leading to poor oxygen supply to brain may also give such problems.
Solace
This is happening to my sister please tell me if u figure anything out
that is what has been happening to me!
if you find anything out, please tell me.
and i will for you.