Thank you Sister. 
"we might define mysticism simply as the experience of getting caught up in God's presence in our world."
"The mystic is anybody who finds union with God in real life..."
And Love is an act of will (inspired by heart, graced by the Holy Spirit) to DO and BE as you have described (in your description of Tevye and Golde) - thank you for highlighting that metaphor. The fact is that the most Loving people are often not even aware that their actions and their presence are evidencing Love.