。
She harshly blamed her husband for betraying her.
Literal
She [topic-は] self [object-を] betrayed [as-として] husband [object-を] severely blamed.
自分を裏切った (betrayed her) provides the grounds for her anger. として marks this as the reason or characterization: 'on the grounds that he betrayed her.' 厳しく (severely/harshly) intensifies 責める (to blame/reproach). The sentence reveals a dramatic interpersonal confrontation — she accused her husband face-to-face.