Can someone help me understand how to write in past tense

I understand that is how most fiction is written but, its kind of a problem with this I am writing.

{Susan owned a large industry and ran it almost herself and Kerry defended them legally. Kerry was a brilliant powerful attorney. Kerry had ambitions beyond that and they have been lobbying for the democratic presidential selection. She has Susan's full support. }

See that little tidbit of a paragraph. Susan owned a large industry and Kerry Defended them. Its in past tense but I said she owned and Karry did this, so what are they doing now. Are they dead sense its all in the past. Well know in my fiction world they are still ok. So how do I write in past tense but still make it seem like im writing about characters that are still here. Or is that even important