I hear you. It stinks she reacted so strongly and that she didn't bother to understand why you made the change. I think it is completely fair to ask her for a plan of action when her office is closed to you. You definitely cannot carry on with her plan if it is unsafe.

Sometimes teammates treat us badly, but they are still teammates. Hopefully you can find a way to be comfortable with her again. I'm wishing you all the best today!