Impotence or ED is a very frustrating and trying time for both parties and your partner may have emotional outbursts because of that. It is common for mockery or ridicule to insinuate itself into these conflicts. The intense nature of the feelings surrounding sexual intimacy may lead her to say things that she would not usually say. This is where you remain the mature individual, realize that, and strive to keep the relationship alive. The key is to not let things get any worse and you can do that in many ways. Experiment with other forms of lovemaking being always sensitive to her needs and wishes to the best of your ability.