It's a slang term. Others have mentioned some meanings, but you could also say something like 'yeah, she's sorted' (meaning, she's a good friend). Or generica

It's a slang term. Others have mentioned some meanings, but you could also say something like 'yeah, she's sorted' (meaning, she's a good friend). Or generically something like "That's sorted, that is", meaning good. Well sorted, innit m8.