Although it's been a while, I wanted to post an update on the broken glasses replacement.
We ordered my daughters glasses from Zenni Optical and received them about 8 days later. The glasses were (are) good quality and so far we have absolutely no complaints. We had them checked to see if the prescription was accurate and they were right on.
Great work for the money, that's for sure. We paid about $28 total for the glasses- lens, frames and shipping.
Take a chance if you feel like it, just be sure to do it before absolutely needed just in case you experience any issues.