Double check

Straight from work to a goodbye evening with Country Show H (not Scrabble H). A new job and return to NZ beckons. She will be missed.

Then home on the Northern Line. The Northern Line always requires extra checks to make sure you are on the right branch. Especially when the carriage colours trick you into thinking you are on the Piccadilly Line.
It's a bugger when you get it wrong.
She got it right.