Wait Till Helen Comes

Hahn, M. (1986).  Wait Till Helen Comes.  New York, NY:  Clarion Books.

There is a ghost named Helen, and a meanish girl named Heather.  The ghost helps heather, but because Heather is mean, she askes the ghost to do mean things, like trashing the house.  The house ends up burning down and the ghost gets to leave by becoming an angel, and Heather becomes a decent person.  I like the whole ghost thin and mostly the change of a person especially when changing to a better one.