once again , stella was accused of reading minds , of laughing when people lied to her , of flinging things about by the power of the mind , and talking to an invisible friend , 'a familiar ' according to sister bridget marie , who did stella 's bidding , which included finding lost objects and making things fly through the air but stella 's manifestation of these powers was by no means continuous she often tried to behave herself for long periods , she enjoyed reading and history and english , she liked to play with the other girls in the school yard on st andrew street , and she liked the nuns very much .