They confessed that they had made a mistake and offered to replace them, but now I have to wait another week to wear my bootiful new eyeglasses with the updated prescription again.

Wait - did they know that they'd made the mistake before you'd driven all the way back, or only afterwards? How are they compensating you for this mistake (which could have caused you profound emotional damage and psychological injury)?

Got an e-mail today from Agent #2, telling me she'd received my ms.

That's gotta be a good sign if they took the trouble to send an email. Am keeping my fingers crossed.