My friend who works there has said it is something to do with bingate. He says Roxy goes on a bender and instead of taking her home, Ronnie leaves her beside a pile of rubbish. The bins get emptied for the first time that month and they have accidentally mistaken Roxy for an old guy fawkes and crushed her in the rubbish.
Ronnie is traumatised and guilty, and has a breakdown. She starts hearing voices and is sure she can hear Roxy's voice from one of the machines in the launderette. Dot, troubled by her terrible eyesight, doesn't see Ronnie so shuts the door and puts her on a boil wash.
Patrick helps Dot when he finds out what happened, they tumble dry her and dump her in the square where she is found by Lee. Lee is so traumatised he throws himself in front of the bin lorry, causing another fortnight of no rubbish collections.