it's slightly damp, she's been in heavy rain in the last few hours -

有点潮湿几小时前她一定淋了场大雨
no rain anywhere in London in that time.

而伦敦当时没有下雨
Under her coat collar is damp too.

外套领子下面也是湿的
She's turned it up against the wind.

她曾把领子立起来挡风
She's got an umbrella in her pocket, but it's dry and unused.

左边口袋里有把伞但是干的没用过
Not just wind, strong wind - too strong to use her umbrella.

所以风力不小大风大到无法撑伞
We know from her suitcase

从她的手提箱可以推出她打算在此过夜
that she was intending to stay overnight,

因此她肯定是从远方来的
but she can't have travelled more than two or three hours,

但行程不可能超过两三个小时
because her coat still hasn't dried.

因为她的外套还没干
So, where has there been heavy rain and strong wind

因此在那段时间内既下大雨
within the radius of that travel time? Cardiff.

又刮大风的地方就是加的夫