Something caught my eye

Train time back from England included one stop Stafford to Crewe which wasnt long enough to get laptop out so people watching instead.
This lady was intent on her phone when something caught her eye and she caught mine. Whatever it was seemed to fit with mono Monday theme of 'looking out' so here is my first ever challenge photo
I'm still on the journey but on last leg to Glasgow now. Quick hospital visit and then home for bed