As the warm liquid hit the stone, at first it just started to run down the stone.But then the stone seemed to move and start to cave in on itself. It slowly started to fold in and make a small gap at the bottom of the stone, maybe big enough for her to slide under it. On a closer inspection, it would show that she could slide under it, but she could not wear a pack or have her weapons on her belt to do it. There was a light past the stone, showing that there was something past it.