She made gardens in secret places. She planted flowers in forgotten alleyways, and trellised Ivy in the hidden courtyards of long-abandoned buildings. She loved hidden worlds, and wanted them to be beautiful.
She found a solemnity in beauty destined to have no observer. A garden meant for no eyes was still as lovely. Perhaps it was lovelier, a rose growing only for its own sake.
She imagined the sudden rush of joy, someone coming to a desolate, lonely place, and finding a garden instead. The idea gave her comfort.
Plus, it was a great way to hide the bodies.