Silk is the gentle and kind net navi of Anetta. During Anetta's stay at the hospital while dealing with her phycisal therapy, Silk lent her the courage to continue on. However, Silk was deleted when she tried to rescue Anetta from a fire that broke out in the hospital.

Silk's sacrifice left an imprint of sadness on Anetta, leaving her to deal with her troubles on her own.

Source: Rockman.exe Online