If nothing else, knowing nothing serious is wrong may be the therapy she needs. At some point in our lives, all of us behave like borderline or passive-aggressive personalities. The truth is that you will learn a lot more about psychology from your own life than anything you read in a book. Celebrate the fact that you have an opportunity to grow and change for the better in ways you didn't think possible. That is psychology at its best.
Guilt feelings come in two varieties, authentic guilt and false guilt.
Authentic guilt protects us from moral, emotional, spiritual, and physical harm. Authentic guilt serves as a warning signal, which alerts us that we are doing things we shouldn't be doing and that our lives are moving in directions that aren't good for us. In other words, authentic guilt performs a valuable function in our lives. If not, then your feelings of guilt are probably based on erroneous information and false assumptions. When guilt is not dealt with in a healthy way, you may become the victim of crippling anxiety.