I don't think this girl has much knowledge about Islam other than that you should wear hijab, pray and fast(maybe). It doesn't look like she understands how, according to Islam, what she is saying is a grave sin. Another reason why she's acting like that could be because she wants to make people laugh and you get a hint of this by the amount of comedy she drops. At the end of the day, no one knows why but I think if she seriously wasn't a believer, she would not wear the hijab and she probably would be more serious about the whole topic. With that said, let's make dua for her.