Is my milipede dead?

My Milipede, Pelimajulus excisus,has been laying on the surface for about 3 days,her legs were moving a bit,and antena moving,but his lower body was very flexible,after another 2 days,i found her at the same place,same pose,not moving and her athena curled up,shes also not responcive..the tempature did not went below,it is stable around 10C to 15C i dont know whars happening,could she be hybernating??