confusing

Hi,

Is that sentence correct:




It’s so Ironic, last week she was in the Amsterdam 'when' I was in Utrecht and next week, after I’m back to the Amsterdam ,she 'could be in' Utrecht.





What happened is, my friend went to Amsterdam when I was in Utrecht and after I came back to Amsterda, she said she might go to Utrecht!


Shall I replace when with while or something else....Shall I replace 'could be in'



Many thanks

[Casiopea]

What about?

Last week, she was in the Amsterdam and I was in Utrecht, and when I got back to Amsterdam, she said she might go to Utrecht.

Welcome.