A self-professed atheist and scientific rationalist who has had mystical experiences?
Clearly your example isn't meaningless, and in fact shoots a bullet straight through these challenges that mystics cannot be atheists! In fact, it just sparked a realization in me as I read that. I was not a believer in God, an "atheist" in the sense God was not part of my understanding of myself or the world or reality. And like her, I was in my late teens, 18 to be exact, when I had what was a profound, life changing mystical experience! So add me to that list!
In fact her description easily matches my own I've written elsewhere. She says,
"Then when I was 17, I had an experience that I later learned could be called a “mystical experience.” It was almost violent. No faces, voices, nothing like that. It is like the world burst and flamed into life all around me. "
And my account of my own experience recorded elsewhere about 8 years ago goes,
"Suddenly, without any warning or indication, the entire Universe opened to me before my eyes, as if a great curtain opened in an instant. I suddenly saw for the first time in my life - color. The world was full of color, with vibrant greens and blues everywhere! The World was full of light and love and color, and permeated everything as a sort of living joy that surrounded me, moved through me, and began flowing out of the most unimaginably deepest part of my being out into the world in a sort of song, as can only be described as utter, living love.
I saw people walking by me, and rather than feeling darkness and shame in my heart and averting my eyes away as in my past, instead I felt pure love and joy. No thoughts of darkness were in me anywhere at that moment, and I felt truly alive for the first time in my life."
I was not a theist when that happened! So there. End of argument. Anyone, theist or atheist can and do have mystical experiences.
Again, I am stupefied by what appears to be a willful ignorance, a deliberate unwillingness to listen to all these facts that countless people are presenting. Why? Fear of opening themselves to what can be called "religious" feelings, because they are just breaking free of fundamentalist dogmas and it sounds "too close to home" for one now professing atheism to get away from religion? "No atheist would do that!! Atheists are rational!". Or so it's imagined that has anything to do with this.