Hi Irene, welcome to Rootschat.
We would love to help but at the moment it is not clear what information you are looking for. I can see three names, these being:-
Christa Edith Brandt - When and where was she born? Is Brandt her maiden name or married name and when and to whom did she marry?
Peter Brandt - Brother to Christa?
Christiana - no surname given - Christa's daughter.
I take it that you are saying the Brandt family lived in Sottmar, Germany.
Christa moved to England and died. Christa had a daughter Christiana. Who married the forces man, Christa or Christiana? When and where did the marriage take place?
Are you able to clarify the above information, so that we have a clearer idea of what information you require?