Relevant what she's knitting?
Yes For whom?
No Is she knitting more than one thing?
No Does she use different color yarn depending on the lateness of the train?
YES Is she making something with stripes?
YesIs she knitting a three coloured striped scarf
Yes with red being the thickest stripe?
Not quite, see spoiler for detailsEdit 'Just noticed after I'd posted that Galfisk asked about stripes.
********SPOILER********
Violet knits a "delay scarf" to visualize delays on her daily commute over the course of a year. She knits two rows every day, using grey yarn if her train is on time, pink if it's between 5 and 30 minutes late, and red if it's more than 30 minutes late.
The result can be seen here - it's actually half grey with a lot of pink, but also has a huge red chunk for 6.5 weeks of rail replacement service.Great groundwork by android, and nice solve by Peter and GalFisk!