What two things does Elizabeth blame herself for?

Elizabeth blames herself for her husband's infidelity and having a cold house, demonstrating her sense of responsibility both in the personal realm and in the domestic environment. Her acknowledgment of her husband’s affair reveals her inner conflict and self-critique, suggesting that she feels she might have failed in her role as a wife in some capacity, which contributed to John Proctor’s actions. Additionally, her reference to the coldness of their home symbolizes not just physical discomfort but also the emotional distance that has developed in their relationship. This reflects her belief that she could have fostered a warmer, more inviting atmosphere if she had been more attentive or affectionate, thereby reinforcing her feelings of guilt and inadequacy in their marriage.

The other options, while touching on relevant themes such as forgiveness, faith, or broader societal fears, do not align with Elizabeth's specific introspections regarding her relationship with Proctor and the state of their household.