Lille engelsk oversættelse

Hej, vil I kigge den her igennem for grammatikfejl?

I must say that my departure became a big success. It sounds strange, right? But it’s true.
On the last day I was to say goodbye to Mr. Colt and the others. I found them sitting in the living room and of course we talked about my plans, and at the same time I thanked them for their kindness during my stay in Chicago, a city, I had started to be very fond of. In spite of all the strange things, I had been told before my arrival, I hadn’t found anything uncomfortable here; on the contrary it had all really been a comfortable experience. Maybe I had just been lucky. Mary, who had promised to come, was absent. Nor Joan was there.
Half an hour later as I got up to leave, Henry said: “I go with you, Miss Dayton. I’m going to the post office. There’s something I’ve forgot to buy.”
It was raining but we walked all the way to the railway station – passing the post office, the supermarket and a jeweller store. He said that he would wait until my train had left the station. And then we talked about a bunch of thing that I don’t remember any longer. The most important thing was that I promised to come back in three weeks. Less than three weeks. I don’t know if he bought anything at the post office on his way home or if he’d forgotten it or if it was too late. But I know that he bought something the next time I came. For me. And not from the post office. Maybe you can guess where it was.