Complex sentence: But Johanna and Arthur Schopenhauer would never again meet in person, and even after her death, Schopenhauer continued to express complaints about her--about how bad a mother she was.
Split into simpler sentences: But Johanna and Arthur Schopenhauer would never again meet in person. As a matter of fact, even after her death, Schopenhauer would continue to express complaints about her--about how bad a mother she was.