I don't think that you can ever recover from the loss of a child, but for some reason I can't help but think that Heather and Mike will, someday, be ok. They are so strong and I think will continue to honor Maddie, not just mourn her loss.
Heather wrote an amazing tribute to Maddie, as well as made a video, which both can be seen on the website. Read the tribute and watch the video with a box of kleenex, you'll need it.
Heather and Mike, you are in my thoughts and I'm sure thousands of others. Just keep breathing.