Well I genuinely don't understand how you can go from presumably holding down a job and travelling to another country and attending a training course (all of which suggest that she was in a good mental state) to overnight being sectioned. Everything that happened afterwards is more or less intelligible to me although I do think it objectionable.
Was a language barrier at play in the original sectioning decision, I wonder? Woman is having panic attack, is foreign, possibly can't speak English well, police assume she is having some sort of serious MH episode and dump her at a mental hospital? Before she knows it she gets sucked into the MH system, has no decent representation, possibly can't speak English and doesn't understand what the hell is going on.
If any of you are HCPs you must surely see that the opacity of cases like this only increase people's worry and fear about MH care and make people less likely to seek help when they need it.