I think that this is one of their better shows. I first heard about it on Morning Edition on NPR and bought a recording of the show and loved it, without ever having seen it.
Flaherty's melodies are infectuous and Ahren's work is excellent. If it seems like "a children's show", you have to remember that the characters singing the songs are not educated people. I think that they work perfectly. In fact when she has the mother rhyme "dancers" with "answers", I feel it comes across as too clever.
I didn't get to see the show in New York, but I saw the national tour.
And I did see a college production of it with a virtually all white cast (The show starts with a bunch of white, clean cut college kids wearing raggedy clothes huddled by a "fire." My first thought was, "This looks like it could be the musical version of "I Know What You Did Last Summer"...), and the show still worked!
I still teared up when she died.
The show got cheated at the Tony Awards. It should have gotten Best Score, at least. ("Will Rogers Follies" won because Betty Comden and Adolph Green survived "A Doll's Life")
"A coherent existance after so many years of muddle" - Desiree' Armfelt, A Little Night Music
"Life keeps happening everyday, Say Yes" - 70, Girls, 70
"Life is what you do while you're waiting to die" - Zorba