As it stands, it would make for an interesting exercise in set dressing, cinematography and editing - it contains a huge amount of detail for such a short work, which is good from a story-telling point of view, but would be quite a challenge for a no-budget film-maker.
Story-wise, it's very descriptive but lacks a decent twist. The montage explains how Rachel got to the starting point of piece, but you could cut it all out and it'd hardly be missed. If there's more to the movie than this, perhaps these "chapters" would find their relevance.
The title lead me to expect more:
[there] but for the grace of God [go I] ... so who's the
I who didn't follow Rachel's path? Again, if there's a whole other part to the story, this might make more sense (maybe Rachel's daughter facing the same problems when she grows up?)
Apart from a few minor vocab issues (e.g. I think book cover would read
post-natal depression, not
ante !

) the text is well laid out, very easy to read, very easy to pull apart for the different departments involved.
Here endeth the critique!