I liked it being the penultimate episode this season. They gave 8 episodes showing the current state of everyone, some explanation but not much...and then right before the finale give the glimpse back to the way things were. Answered some lingering questions and made for some extra dramatic effect.
Just like the ultrasound for example...that carried a lot more weight explaining the Garvey's marriage/relationship and was kind of a "oh poo" moment in episode 9, whereas if it had been in episode 1, it's just a detail. Just my opinion, though.
Answers why the Garvey mom went to the GR. For the whole season you think that family didn't lose anyone but she never told them about the baby and poof.