What did Robin do between dropping out of uni and moving to London?

I’ve just reread CC, and note that Robin is 25 and has just recently moved to London. In later books we gradually learn about her whole rape ordeal leading to her dropping out of uni, which I think I recall happening when she was around 19… So while I understand that she was left traumatized and for a while probably did nothing at all, there have been quite a few years between her dropping out and her starting working for Strike, at which time she had apparently only been temping for a fairly short period. Does anyone recall it being disclosed what she did during those years when she still lived in Masham and did not go to uni?