Perhaps she feels 4 emails on an issue that she really cannot respond to adequately except in session is exactly the reason for that boundary. I read her as being firm with you, not so much as scolding but as assertive. You are rightfully angry with her, but that doesn't necessarily mean she feels the same way towards you. Could it be you are expecting confrontation with her so you are reading scolding into her email. Sometimes when people enforce boundaries, we interpret that as having our hands slapped. Hope you start feeling better. This must be excruciating for you.