Instead of creeping up in the dead of night, I knocked on the door and asked if I could pick some lavender. "Help yourself!" was the response. "Take as much as you like." I took them at their word.
Would you believe I now have ten bunches like this hanging from my ceiling rack. And the bush is still covered in flowers. What's more, I know that cutting it back at this time of year will only result in more blooms in the coming weeks. I don't think I'll have to worry about having enough lavender for a while.