Bless your heart bb.

I am so sorry.
Your friend's reaction was completely out of line...I am sorry she reacted that way. However, maybe once she has a little time to process what you've told her she'll come around. Her being shocked doesn't excuse her attitude towards you, but it might at least explain it.
I think you're right in your decision to leave her be for a bit. I do hope that you two can work things out.
Please take care bb. I hope things work out for you.