Independent school? Private tutoring? Tutorial centre? You do not have to have QTS to teach in an academy, although pay will be less. You could also consider being a teaching assistant or cover supervisor. Also, if you contact the university now and talk it through, perhaps they can give you some credits for what you completed and a letter that would ease the way to applying for an on the job training programme such as Schools Direct - all universities will have procedures for special circs such as family illness/personal issues.
I'd suggest Schools Direct too. Coming back after your past experience shows that you have determination and resilience. Heads also like the slightly more mature entrants as they have more life experience.