I always thought Peregrine/Perri is the same as Fastjack's daughter, who is the same as the sysop at the Nexus. Partly because she gets away with calling him Jack in Spy Games, while Sticks gets booted.
Well, see Peregrine was part of the Resistance in the Arcology back when Deus shut it down in 2060. She was 17 then and spoke about how she lived in the Arc and her dad was a company man. Now, it is
possible FastJack works for da man, but she didn't know if her dad was alive or dead when she escaped the Arcology. If FJ's her dad, then I'm sure that he'd let her know as soon as she started broadcasting on Shadowland.
Now, Perri, the technomancer SysAdmin at Denver's Nexus, is apparently the same Perri introduced in Target: Matrix to make the Otaku "public" to Shadowland there. Apparently this is FastJack's daughter, which makes all of Emergence and everything that MUCH more interesting in Jackpoint.
There's never been clarification that they aren't one and the same, and they're both about the same age (at least, the Perri from Target: Matrix in 2055 "sounds" like she's about 12). That would put them both at around 30 in 2073. And about 21 in 2064 when Crash 2.0 hit, which again seems like the right age since Perri's in (a) University at the time. But nothing says they are/aren't one and the same (at least nothing in the books or here I'm not that active on Dumpshock, so I don't know if anything was revealed there).