Complex sentence: In an attempt to both defy her fate and make amends for the Kouga her clansmen had killed, instead of killing Gennosuke she goes up to him, tells him that she loves him, and stabs herself to take her own life.
Split into simpler sentences: In an attempt to both defy her fate and make amends for the Kouga her clansmen had killed, she refuses to kill Gennosuke. Instead she goes up to him, tells him that she loves him, and commits seppuku ending her own life.