You certainly do not sound cold hearted at all. We parents of addicts who have detached are the same. Do you think she is trying to get you to answer by saying that she did something good? Is it worthy to you of responding? If its not that big a deal to you then let it go. Does that sound cold of me? We become so suspicious and untrusting but that is only natural, they have to earn our trust back and that wont happen until they are clean and have been clean for long enough for you to feel safe. Go with your gut feelings, they are seldom wrong. Prayers to you to stay strong.