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Join Date: Oct 2012
Location: the hypergamous cock carousel
Have you tried talking with her about how much and why it bothers you? It sounds like, as Don pointed out, it could be that she is trying to be helpful--but doesn't have the experience or tools to do it effectively.
If she's receptive and you haven't already, it might even be helpful to try to guide her toward some literature/media on social anxiety, to help her understand what it is you're experiencing and why it's so complicated to "deal with."
I have, unfortunately, had to have similar conversations with well-meaning folk in the past, to mixed results. The ones that truly want to help, though, will make the effort.