oh, this story is good! I loved the drama and plate-smashing but best of all, they summoned up the guts to say the "old doggerel" and that took courage. ;)

I don't know what to say about the poetry style ^^; I'd say the imagery proceeded one after another in good sequence making a lot of sense. Perhaps I may suggest more logic...for example

She broods in bed lost amidst a litany of magazines.
"litany of magazines" doesn't ring true for me. I understand you want poetic license, but given the genre, I think realism and plain crisp language might be more impactful.

The wedding’s dream of rose-and-silver mists smashes,Like a china plate falling to the floor.

"The wedding's dream"?
A wedding can't dream. Perhaps I would suggest. *Their* dream instead.

same for
The honeymoon’s airport tags still stick to the suitcases.
ought to be "tags from their honeymoon"

I'm not trying to put a lid on imaginative metaphors, it's just that these ungrammatical bits tend to stuck out for me.

but overall, Great Job!

Nice one!
Please keep writing~~