I too have experienced this introduction/orientation. It was probably my second or third attempt. Don't be surprised if you continue to build a relationship with "her" before you get sort of steamrolled. "She" is always welcoming and unspeakably loving toward me, and seemed to be "teaching" me to navigate/operate in that space via my breath (but she did make a point that it is not the breath for everyone... some it is the voice, others movement etc.) In the waves of even an intense breakthrough, there seems to be some little piece of "you/ego" that survives; that little piece will usually get rather scared, or at least concerned, if it does not have a job to do like breathing, chanting, humming etc. Glad you had such a great first experience, and I second "her" advise in making sure you are sober for the next journey. Happy travels...
There exists precious little outside that in which you believe, and thus choose to see.
~SlippyJ