She's one of many Sussex commuters fed up with the standards of service of our trains but she has a bit more clout than the average commuter - and today she set about using it.
Caroline Lucas, the Green Party MP for Brighton Pavilion, has launched a Parliamentary Bill proposing the renationalisation of the rail network. She says it would reduce fares, improve punctuality and save taxpayers a billion pounds a year. Andy Dickenson reports.
The Department for Transport have now issued a statement for this report.
They said: "We are determined to make journeys better and it is unacceptable that customers are not always receiving the service they deserve.
"We believe that franchising provides the best way to improve services and closely monitor the performance of all train companies - and offer them incentives to meet targets."