Overheard at the gas station

When I went in to pay for my gas this morning there was a lady at the counter who I realized was not a customer. She and the cashier were having a conversation:

Cashier: Why today?
Woman At Counter: [some noncommittal answer]
C: Why not yesterday? Why not last week?
WAC: [something about him calling her last night]
C: Why are you getting divorced today?
WAC: I need to find out how much it will cost.
C: You should be able to get it done free, since he's incarcerated.