You can't, it's impossible, she's not in the game, but, if you load your save files from .hack//Infection, mutation, or outbreak, you get an email from blackrose, and if you load ure file from .hack//Quarantine, u get a mails from Hokuto and Blackrose. Furthermore, if you load any of these save files, Azure Kite( supposedly Tri-Edge by Haseo in the beginning) his name will change to the one u chose in the from your old save files if u loaded them.
In .hack//G.U. Vol.1, the Black Rose character card can be obtained by trading with other players in the game's Crimson VS card battling mini-game. You can also try completing certain side quests or defeating certain strong enemies to acquire the card.
there is no .hack GU vol 4 it only goes up to vol 3
There are no known cheats or codes for the game .hack//G.U. Vol.3: Redemption. Players are encouraged to play the game legitimately to fully experience the storyline and challenges it presents.
-hack G-U- Vol- 1 Saitan - 2006 VG is rated/received certificates of: USA:T
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-hack G-U- Vol- 2 Kimi omou koe - 2006 VG is rated/received certificates of: USA:T
-hack G-U- Vol- 1 Saitan - 2006 VG was released on: Japan: 18 May 2006 USA: 24 October 2006
-hack Akusei heni vol- 2 - 2002 VG is rated/received certificates of: Germany:12 South Korea:12 UK:12 USA:T
-hack Zettai houi vol- 4 - 2003 VG is rated/received certificates of: Germany:12 South Korea:12 UK:12 USA:T
-hack Shinshoku osen vol- 3 - 2002 VG is rated/received certificates of: Germany:12 South Korea:12 UK:12 USA:T
-hack Osen kakudai vol- 1 - 2002 VG is rated/received certificates of: Australia:MA Germany:12 South Korea:12 UK:12 USA:T
-hack G-U- Vol-3 Aruku you na hayasa de - 2007 VG is rated/received certificates of: USA:T
-hack G-U- Vol-3 Aruku you na hayasa de - 2007 VG was released on: Japan: 18 January 2007 USA: 10 September 2007