When dee compares Maggie's brain to an elephants she means that Maggie?

When Dee compares Maggie's brain to an elephant's, she implies that Maggie has a strong, enduring memory and an ability to retain knowledge, similar to the way elephants are known for their impressive memory. This comparison suggests that Maggie has a depth of understanding and experience that may not be immediately recognized by those around her. It highlights the contrast between Dee’s superficial perceptions and Maggie’s substantial, albeit understated, intelligence.