No, I don't think the letter puts pressure on him. It was very centered from your point of view, and only talked about his actions as observations, not reading anything into them, or assigning meaning to them. The letter was positive and described your journey from a bottomless pit of despair up to a happy meaningful view of the world. It is not woe is me. It is inspiring for others who may have to at some time walk the same path. Your strength and love of life come through. He is not the focus of the letter at all.
