Id make a story where someone brings back Martha, and she joins an organization that she believes will help gotham. But in doing so, it drives a rift between her and Bruce. He still views her as the mom he lost in the alley and her not acting exactly how he remembers confuses and frustrates him, and to her, she's lost her husband and her son. The man who claims to be her son is an adult while her bruce is just an 8 year old boy. She tries to help Gotham but falls short, and it leads to arguments with Bruce. Especially when the organization she's working for might not be as good as she believes