I'm glad you called the emergency counseling center, IG, and that they were able to let you know that they will get you ASAP. Here's hoping that they have an opening quickly! You deserve the support.

I was going to comment yet again on whether or not to send the lengthier email but then, after reading your responses, I realized that you have probably already made your decision and acted on it. I totally understand and I hope that letting her know how she made you feel soothes some of the hurt!
Only you know what works for you.