cultural experiences of dee shaped perspective on the world. unlike her mother, dee was able to get an education and understand her heritage as well as study it an example of this is shown in the line "Dee informs her mother that she has now changed her name to Wangero Leewanika Kemanjo in order to protest the oppression and cultural whitewashing Black Americans faced.". Dee was only able to see the situation in this light because of the education and experiences she had been through, unlike her mother.
A force of nature is "an event outside of human control for which no one can be responsible for." Therefore, when someone is called a force of nature it usually means they have a very strong character or personality.
One of the first things Harry learns about the wizarding world is that it's dangerous to mess with goblins and flat-out mad to try and rob Gringotts, but Voldemort manages to attempt this a few chapters later, offscreen. Then Book 7 rolls around.The high-security vaults are guarded by dragons.