This just popped into my head....buy a coloring book with ** lots **of pages and a box of crayons. Wrap it up in pretty paper and tell her this is special, just for her. Then tell her that she needs to color every picture, do her best work and when she has colored every picture bring it back to show you. Tell her not to come back until the book is completed and that she must do her very best.
If you do decide to do this, let us know how long it took.
Or...
Tell her your garden is a magic garden and fairies live there. You aren't allowed to talk because it might scare them away! She might get bored and leave.
Or....
Offer her a patch of your garden to plant her own flowers in:
