Is it permissible for a group of girls to stay overnight in the mosque (sleepover)?


This is a questioned answered by the Permanent Committee regarding, I live in Denmark, we have a kinda of musalah or a majid in a lokal town and my question is about, can girls overnight in the majid without a muhram. The reason these girls are overnighting in majid is, to spend time with each other and to speak about islamic things and benefit each other. Though they are sleeping there without a muhram they have permission from their parents/muhrams. And this majid/musalah is saparated from the mens majid but they are still close.(so they can be heard if they are to load or they can be seen of the men just come in their side on purpose).