You must not do anything to the young woman – she has done nothing deserving of death. This case is the same as when someone attacks another person and murders him,
If a person commits a sin punishable by death and is executed, and you hang the corpse on a tree,
But if the man came across the engaged woman in the field and overpowered her and raped her, then only the rapist must die.
for the man met her in the field and the engaged woman cried out, but there was no one to rescue her.