Dorothea goes again

rthey stayed there most of the night and looked at the things but at 3 am they heard some sounds and voices at first they just thought that it was some guards walking a last round but then they saw things begin to moving and flying in the air and then they saw it was a ghost but not just any ghost this was queen dorothea of england 1723

Two boys are going on a museum but they discover something they never thought they would see or should I say someone so what do they do now run for their life or find out what they discovered

Before your read I just wanna say that English is not my first language so I'm sorry if there are any spelling mistakes