Importance of Natasha's thank-you message for Irene

Natasha’s thank-you message symbolizes the importance of doing good and the intervention of God. The thank-you message is left for Irene on Lester’s phone. Natasha extends her thanks because if Irene had never held her up, Natasha would never have met Lester or had a meeting with Fitzgerald–before which she met Daniel. The message is a good deed and prevents the suicide of Irene, which in turn leads to Irene thanking Natasha on a plane ten years later–and unknowingly paving the way for a reunion between Daniel and Natasha.