Okay, I had a look.
So, I noticed they have an impressive oak tree in a important-sounding ("Great") hall ...
Also this must be the first time Alachia is mentioned by name since Second Edition (unless she is also mentioned in Court of Shadows). At first I thought she is this Lady Thisbe, the Queen in Exile, but apparently yet another queen. Adding to that Aina as the Ebon Queen—who made her a queen anyway?
Lyllaria's Mirror would be an interesting connection. (BTW: Lyllaria was also an Elven Queen, though not of Wyrm Wood.) It's a good fit. Using the mirror actually causes strain. "Ashen" doesn't really fit the physical description of the mirror or its frame, but that could have changed. Let's assume it is the same mirror for a moment: In Earthdawn without weaving threads to it the viewing range was rather limited. So would that imply the Ebon Queen is imprisoned nearby? Of course it's not defined how the ranks of magical items translate to Shadowrun and who knows what "near" really means on a metaplane.