any way to sex 2 week old araucanas?

[LadyLuck]

I want to buy some Araucanas from someone off Craigslist. She says that they were hatched on March 8, and has no way of selling me pullets. I wouldn't mind if one turned out to be a roo, but since I only plan to buy 4 (have 8 other peeps) I would love to at least increase my odds at getting pullets.
Any way to tell? THanks