Lifted off the National Rail Enquiries web pages:
Leeds/Colne platform : step free access from Paxton street up steep 50 metre ramp with handrail or past the carpark and a shallower ramp. Preston platform : step free access up gently sloping footpath from Eagle Street. Ticket office is on Leeds/Colne platform, with stepped footbridge between platforms comprising of 25 steps up and 24 steps down with rest platforms.
Would the lady not have a return ticket and thus not need to visit the booking office in Accrington?? Taxi (or you) would drop her on Paxton Street.
or this maybe?
http://www.nationalrail.co.uk/statio...assengers.aspx