The Indira Gandhi National Open University (IGNOU) offers courses to students to continue or pursue higher studies for everyone. One can opt for full time or part time courses. The full time courses takes less time for completion and part time takes additional time frame. A students can study lessons at home, prepare assignments, and attend induction programs conducted by co-ordinator's and teachers.
This is the best preference for employers, house wives, and part time study and distance education. For high school drop outs they have to start with Bachealor Preparatory Programme (BPP) before pursuing higher studies in any course.
In your case, your wife should approach the co-ordinator for admission and attach her previous qualification to get admission in Arts, Science or Commerce. Since she has completed her Matriculate, she doesn't need to complete BPP. She can study privately.