I appreciate you putting faith in my suggestion but you must check with Citizen Advisory Bureau(CAB) or Immigration Solicitor. As far as I know your application will be separate because of following things:
1. Since your Indefinite, you have reached the age of 18
2. Your father was not british and you were not born when your mother had indefinite stay in UK.
3. It wasn't you that came on the marriage basis(it was your mother). If you were under 18, you could be included in her application.
Solicitors do have access to latest knowledge and they might even try something that I am not aware of. Definitely call the CAB or try legal help from Law Centre. These are free advice if you live in a large city, they have Law Centre.
Waheed