NAVI (Neural Augmentation and Virtual Intelligence) is, on the surface, a training program for new runners. She's going to have the 'bubbly elf girl' personality that occasionally glitches to 'bloodthirsty succubus'. She'll cover things like Street Etiquette, the HALO system, Codes, etc. in addition to giving players out of character knowledge that they should already know (what to roll to shoot a gun, etc.).
The fun thing about her is that she's actually an AI and is very good friends with Stolichnaya. While she helps the newbies out, she also diggs through their comms and cross-references what she finds with multiple databases to learn as much as she can about the runners and transmits the data back to Stoli; a safety precaution for the both of them. If your new street samurai is being hunted by and has a huge bounty from Ares... well, why not nip the problem in the bud and make some cash along the way?
"Ganon took her away, now the children no play..."