The Ghost Hunter by Lacey Carter Andersen

Do you think you’re never too old to get into trouble? Good, neither do we…
My best friend and I thought our days of hunting were long over. We figured we’d done our part, so we’d leave it to the next generation of witches.
Until some trickster steals my powers.
The young hunters are spooked, so what are a couple of tough ladies going to do? We pull out our leather jackets and hit the road. Because we might be too old for bullcrap, but we’ll never be too old to serve up some justice.