Basically, you've merged Marie's profile into Frank's profile; so now there is no profile for Marie at WikiTree.
No problem! Even though merges can't be undone, you CAN create a new profile for Marie. But first you need to check the profiles for Frank and Joseph; you have the same spouse (Amelia Janisch) attached to both of them.
If you need help untangling profile attachments, let us know who goes where and I or another manager will help you.