This is a jinn possession of a girl. It is possible for jinn (they are good jinn and bad and they also have thir own faiths etc) to enter a human.
This video i came across is very similer to the excorcist. Muslims have been aware of these kinds of things for a while and are familer how to take
the jinn out of people. Wether you wanna call em Jumbie..like in the carribean..jinn..ghost..poltergeist..etc. They all are a form of jinn. Some
people have the ability to cast bad jinn on people.. while some might find some good jinn come pray with them in their houses. Other jinn .. if they
live in the same house just relax and don't cause harm while others can really screw with you.
Hmm, dunno what to think about it... the fact that girl is talking in a weird way doesn't necessarily mean she's possessed.
It could simply be some kind of madness, or even a hoax...