I followed some lines on my ancester far back but I can't figure out much on my grandmother Ingrid Susanne Christiane Kiesau (Kiesau-9). She was born on May 27, 1922 in Berlin but I don't know in which district. She had four children between 1940 and 1943. There must have been another one which has been killed during the bombing. She left her husband between 1944 and 1949 (I suspect because of physical abuse of her and/or the children). He took their children away and put them in foster care. She married Richard Alge (my grandfather), somehow managed to get back her children.
All that is completely unsourced. I only have sources on Richard Alge and their children. Since I have only Berlin as a birth place I have not enough data to find out more (and I suspect it will be difficult to find more in that time period even with more data) but a more exact birth place and data on the parents would be extremely helpful.
There are two datasets on MyHeritage which look promising. Could anyone with an account be so gentle to extract a birth place of Ingrid and names and */+-date of her parents for me?