Status Updates From Heartwood

So the big question: is Lena's penpal, the young man with the bright bandana on his wrist, the same young man from the woods? But of course, the mystery is secondary. Is it relevant that we have 3 women constantly having such in-depth thoughts about their mothers??? Is it relevant that our thoughts about our mothers change depending on our current situation??? Is it just a story of 3 women??? What connects then???