Is it permissible for women to dance among themselves? May Allah reward you.

It is permissible for women to dance in their own private sphere under certain conditions: that it does not lead to temptation (fitna), that it is not accompanied by anything forbidden (haram) like musical instruments or raised voices that can be heard by non-mahram men, and provided there is complete covering of the 'awrah (parts of the body that must be covered).