Feeling exposed and being exposed are not the same thing! Think about someone you don't know and if they told you what you have told your therapist? You still would not know them, you might know more about them, but not really them?

How you feel about your information, what you have to say, determines how you feel about telling the other person that information. My information does not become your property just because I give it to you. My heart does not become yours either. Yes, I can be hurt if I like you and you say you do not like me after we have shared all about me but a "stranger" not liking me is not able to hurt me that way precisely because they are not willing and able to learn to get to know me and give me time to share myself as a therapist will!

My stepmother would ask me questions to "trap" me, not to get to know me. So, when my therapist would ask me questions it felt like. . .

What we feel (and think) is not necessarily what is taking place. We need to feel what we feel and then check out its appropriateness for this situation. The better we get at checking out our feelings, the better they can serve us (because then they and our thoughts will coincide and work together better to inform us about ourselves and the people we are in contact with).