She is at uni in south wales and lives there permanently now. She has volunteered to work at the Olympics because it will be a great opportunity to put her skills into practice (it's related to her degree, she graduates this year) and will look good on her CV. She has been assigned to the Aquatic Centre for 3 weeks. The Aquatic Centre is in London. She lives in Wales. She will have an allowance of £100 a week from which she has to pay for food, travel and lodging. Three of her friends are also working at the Olympics, but two of them have been assigned to Cardiff, which is very close to home. They all get the same allowance of £100 a week.
It's impossible to manage on £100 a week and she doesn't know anyone who lives near the site that she can stay with. She has asked to stay at my place, which is fine, although it will take her about 1.5 hours each way.
She is tempted to say that she cannot help after all, and who can blame her.