If all of this sounds dismal, it's not. Perry and wife Eleanor are masters of scraping the surface and revealing the hollowness behind people... its just always sad there's one clear-eyed woman (or man) to observe this. Snodgress does seem to eventually liberate herself. It's an obvious but astute metaphor, but the mention of a deadly plant virus that wipes out the vineyard Tina's husband invests in is apt. "Diary of a Mad Housewife" explores the rottenness that bubbles up slowly not only via the wonderful performance of Carrie Snodgress, but the re-growth that's always possible.
"Diary of a Mad Housewife" isn't available on DVD, only on OOP VHS sources, which is a shame.