NOT spoiler free.
I found Mina’s Matchbox quite scattered and 1-dimensional. It harshly oscillates between unbearably boring and quirkily imaginative.
I finished the novel only because I misinterpreted/ over-read? sentences that were just facts, not allusions to an upcoming unravelling of charged events. The novel, or Edgers' Manual (as I like to call it), is peppered with sentences like:

Totally agree that this should have been a short story. I still don’t think I’d have liked it but at least it would be… short.