You mentioned that she had been instucting you but it ended on a bad note. Maybe she has issues, she's upset b/c she lost a client, etc. Just b/c you may have some problems dealing with certain things socially doesn't mean that other people are perfect in that respect. If you are angry about something, don't invalidate your feelings. And please don't internalize it, like you'd said you should do, b/c the very definition of depression is anger turned inward. You need to take care of yourself & not other people. You know what happened to you, & you don't need this woman's opinion to validate that. What she thinks doesn't matter.
I feel like a hypocrite giving you this advice, as I struggle with the very same problem (anger & frutration socially). But sometimes it's easier to see things objectively rather than subjectively. I understand what you are struggling with, & I wish you wouldn't ponder over it so much. I don't think that anyone is worth the misery we put ourselves through, trying so hard to please everyone. It always seems like, in the end, they disappoint us, anyway. I wish I knew how to stop this behavior-if you find out, please let me know. I think it's just a matter of finally figuring out what I just wrote; that it just isn't worth torturing ourselves over it.