Class-Action Lawsuit?

Well, maybe not that dramatic . . . but I received a letter yesterday from a freelance gardener whom I paid $100+ to do a "planting plan" for my backyard. She was supposed to soon start working on the actual "planting" part; however, the letter said she was no longer doing freelance work. So I'm left with a lovely plan and no action . . . not acceptable. I threatened to take her to small claims court if she didn't refund some of my money.