I don't think she will hate you for this. She is a professional and should be able not to take it personally. However, if you believe your comment was hurtful, it's a good idea to apologize. Therapist is a real person, a real human being, despite being a professional, and interactions with therapist are real human interactions. It's a normal human behavior to apologize when we feel we did something hurtful in whatever settings and whatever relationship it occurs. IMO, it makes therapeutic relationship healthier when the normal rules of human interactions are applied in therapy settings.