Thomas, Uncle Frank, mdchachi, Lothor, thank you all for your very kind wishes (and my apologies for not responding sooner).
I'm happy to report that Elena has been home with us for a couple weeks now.
She just turned three months last week, and she's getting bigger and more curious and full of energy every day.
She keeps mommy and daddy busy, but it's been more than worth it.
(Sorry for another 親バカ post.)