Mums Gone - Edit 1

[tectak]

Hi tomo (not keith, an age thing typo...how are you keith?)
a big yes to this. I wouldn't presume to adjust intent or flavour because it is my kind of relish. If there must be crit then so be it...but the in text  nits are  not irritating enough to use drastic remedial action...just a  comb-through would do it. A  very  nice piece.
Your fingers dipped and disappeared 
to produce two 20p's from your worn plum purse.  Questioning another "your" as it is unlikely she would dip in to someone else's purse. You might find that "a purse" works here...by implying familiar memory on your (the narrator's) part
"Go quick! Get something while Mum's gone!" 
Seat-belts unbuckled we scuttled 
into Blacks Newsagents, emerging 
with a hoard of tart, emerald, apple Frosties 
to share with you.  Though this line is extended  to a degree, yet it is supported well by punctuation, there .1is something irksome with the enjambment which I am damned if I can put my finger on. On rereading the sentence over and over I think I am more irritated by not knowing what's wrong with it than by what's wrong with it
We three sat then, in sweet hush, 
sucking the spoils like gleeful pirates, 
and sat still, tight-lipped 
through the scolding;
all the closer for taking it together.  Not so here. "sat then" and "sat still" is saturation. Too much sat. Not much can upset this piece, though. It still works.

The sharp-sugary giveaway scent of that day It may be a giveaway to you but what is it giving away? I don't think you mean this. I think you mean "distinctive" or "emotive" or "familiar"...or a combination of all three. Your poem. In any event I read " sugary-sharp" or "sharp, sugary" but not "sharp-sugary". To be honest, one you have defined that citric scent you could almost drop the word "giveaway" completely as you have  "given away" the identifier by the description.
mingled with Gordon's and Channel and hinted to me
of your presence for years thereafter Beautiful encapsulated thought. The persistence of memory by Madelaines is not as convincing as by the scent of Madelaines. Proust please note.

until it was lost  You do not need this break. You are writing about a continuous, and by your own words concurrent, memory train. A shift, maybe, from the creation "then" until the ongoing "now" but linear,  nonetheless. Why break the link?
to lavender and ageing orange, Just excellent
the evening I was led, one of the cousins,
down to where you lay to say hello.  Punctuation matters.Did she always lie down when greeting you?
My hand clutched gently in vanishing light 
at the sudden onset of mid-winter night,
you asked of my behaviour, school, sports and such. "and such" is such a let-down. You may as well have said etc.
I relayed comings and goings; neither of us 
focused on the comings too much.
When time for a younger helloUnclear
I stood to go, hugged and said I'd see you soon. 
Stupidly. "Not as soon as I'd like." you replied, Stictly, comma after the narrative
words and embrace wavering 
from the strain in your back 
broken in the attack of the wretched man
who wrenched your purse from you; This sentence is in a bloody rush. It needs  calming down. It is pivotal. Emphasise the point by clarity and get the sombreness, seriousness and weight of feeling up front. There are complex feelings here. Outrage, sorrow, guilt(?), remorse, regret, love...do not rush to the finish line. I see this far too often. Keep faith with the texture and detail and never stop flying.
eighty cents, a tattered tube of Frosties,
the last of your resilience.

It was incense when next I saw you,
inclined and elevated atop yourself Poor , unthought-out image. Again, rushed.
smiling irreverently 
on the elegant and black-clad snuffling past. Punctuation matters. You are now tired.I know what you mean but any unintentional optional meaning at this late stage sits uneasily on the reason...seewhat I mean?
I was glad only the adults travelled
to have you burned and scattered.
You’d never have acknowledged
that journey really mattered. It is an ending of sorts. It does conclude....but how I wish you had phrased it...er...better? Differently?