I enjoyed reading the poem aloud, so your tonglen reference does make a lot of sense to me. Also, I like Pema Chödrön, so thanks for sharing her tonglen video :)

Have you heard any of Choying Drolma's singing? There are two songs in particular that I make a point of using when I'm writing compassion focused scenes (and they really make a difference for me). They are: Palden Rangjung (by Choying Drolma and Steve Tibbetts); and Great Compassion Mantra (by Choying Drolma).