The post office wasn't making money so they opted to close it. The residents of the square thought the 'powers that be' were closing them down and started rallying to save it. Eventually, the husband told everyone that it wasn't like that - and the wife (I'm crap at remembering names LOL) was mortified and was dying of shame.
The daughter is going off travelling - unrelated, but bad timing.
The son was mentioned aaages ago when they first moved in - he's estranged and wants nothing to do with the parents.
HTH!