Oops, I forgot Annika's father was a professor, too. I meant Seven of Nine a.k.a Professor Annika Hansen (that's what she is called in the novels, anyway).
Yes, I meant Terran in the sense of the revived Terran Empire.
The alien network operated by the Hirogen was not officially repaired (in STO). But, as is pointed out somewhere on Ex-Astris-Scientia.org, could an intragalactic network that survived for 100,000 years just knocked out because a single
component fails? Maybe parts of the system survived, or the remaining hardwork could be repurposed, or it had limited autoregenerative abilities. Somehow, Sela came through to the Hirogen using the remains of the network. Maybe the Romulan engineers had a lucky day?