Well done, Twice as Nice, and thank you for raising this and showing me I am not alone.
A couple of months after my husband died, I travelled alone to see my daughter. It was a long trip entailing changing trains in London via the Tube. The outward journey was OK but on the way back the first train was late so I missed my connection. When the station assistant told me (wrongly) that I would have to buy a new ticket, I got very upset, and just broke down. I told her this was my first trip alone since the death of my husband, and her manner changed completely - she took my to the First Class lounge for a coffee and wrote out a slip allowing me to take the next train. So all was well in the end.
However, the next time I had to do the same journey, when I reached the station in question, I had what I can only call a panic attack. Everything felt unreal and frightening, and the crowds seemed almost menacing. I had to sit down and make myself breathe slowly while I waited for my train. I arrived safely, but dreaded the next time I would have to make the journey.
But it was the only way I could get to visit my daughter, so I persevered. Each time I made the journey, it got easier, and now I'm OK about train travel. I am not normally a wuss - I am a capable, confident, grounded sort of woman- but I do understand and respect others who have had similar problems.