If you're interested, and even if you're not, I've released an original letter from Helen to her brother Pollux, unearthed after all these millennia from my brain, over at GeekaChicas!
These letters will be published periodically in honor of National Novel Writing Month and my Work-In-Progress about Helen's story and the Trojan War. I'll give you guys a post here to let you know when they go up. The next letter will be Pollux's response to Helen's plea.
Yes, I'm absolutely aware that letter writing is, technically speaking, not necessarily historically accurate for the time. (That was a lot of adverbs.) But if Ovid can do it, I figure in the interest of artistic license, fudging things a bit can't hurt.