As for Aeris, the first game stated that the Turks went looking for Aeris from time to time, but never caught her. Of course, it might be that the one who had a thing for her (Reno?) always let her get away. I don’t know what CC says about this, of course.
To my memory, there is a cut scene where Tseng actually visits Aeris at her home, and tries to convince her to go willingly to Shinra. I think the Turks always knew where she lived, but for some reason Shinra wanted her voluntary cooperation, which doesn’t really make sense considering how Shinra dealt with her (biological) mother. My memory is sort of hazy but is it implied that Tseng did take pity on her, and not take her by force? This is sort of contradicted when he bitchslaps her in the helicopter.
EDIT: Sorry, missed this:
Why would the Turks need to look for her? They know where she lives. (Speaking of which, I just realized that we never get to see Aerith’s mother in CC. Hm.)
I love this thread!