That they used our memories is a possibility, but if that were the case they would likely have tried to replicate the gems in your daughter. That and their form may not have every detail about them correct, as the memory is a rather inconsistent recording device.

[Haer'Dalis looked a little nervous as if he was thinking of something that he likely should not be.]

This... may seem a little unorthodox, but may I try something with the body?