Congratulations to the family! Lena Elizabeth is a gorgeous name, and it's a coincidence because I have always liked Magdalena Elisabeth with the nickname Lena for a future child of my own. Great minds must think alike
Lena is certainly unexpected and out of the blue! I was expecting them to go for a name that's unique amongst royal circles but more common amongst us regular folks, such as Olivia or Sienna.
I also naturally pronounce Lena as Mike and Zara do so the pronunciation isn't an issue for me. I prefer it to the "lee-nuh" pronunciation which I'd spell as Lina.