I feel that you may be a little too sensitive but it's something your therapist is asking you if you want to get over. She is asking you if you want people to tread around you so carefully that they cannot be themselves around you?

Just have a gentle think about that and ask yourself if you care about those people as family and if the answer is yes then what do you want to do about it? How long have you been seeing your boyfriend and in what context did she make the comment? This should give you a pretty clear idea of her meaning and if she meant it to be hurtful. Which I don't think she did. To me it simply means you don't get the meaning yet.

I also think you need to look past the comment and into the mirror to ask yourself what made you react this way?