Get her a Golf GT TDi. Who cares if your mates have em, they are REALLY awesome cars. It's not all about the pruchase price either.... yeah you can go and buy other cars already mentioned, but have you looked at both the insurance costs, fuel/running and servicing costs........ you can easily wank much more on these that would out way a lot of cars on depreciation.
Granted the Golf's are not cheap, but they hold there value, go like shit off a shovel and are very resonable to run. You can also park it anywhere without fear of some slag keying it or trying to nick it.
The TT's are nice but imho are way over priced for that engine.