Her Wiccan, Wiccan Ways by Traci Hall
I really liked this one and want to read more in the series. Rhiannon has special psychic powers that can turn violent when she is too upset and that caused a bit of trouble in her old neighborhood. Her parents moved to the country so that she would have a fresh start and a chance to be a bit more normal. But upon arriving at their new country house, Rhiannon finds it already occupied by a ghost that she can sense and talk to.