Settlement visa is required, my wifes application went in on monday, costs around £750 but the prices go up in April by around 10% you will need about 10 tonnes of paper work. VAF4A is the form you need but in Indonesia you had to apply online so you need to check with the british embassy.
Your wife will have to pass an approved english test (speaking and listening) unless she got her degree at an english speaking uni.
It takes a long time costs allot of money and is very very annoying but at the end of the day its got to be done.
http://ukinturkey.fco.gov.uk/en/visiting-uk/visas/ should be your first port of call.