There is strong evidence that the observable universe is composed almost entirely of ordinary matter, as opposed to an equal mixture of matter and antimatter. This asymmetry of matter and antimatter in the visible universe is one of the great unsolved problems in physics.
Her [Alice Jarman’s] mother was one of the sisters of the seven brothers from the House of Ste-tee-thlum, the legendary 18th-century S’Klallam chief.
There is no difference in the gravitational behavior of matter and antimatter. In other words, antimatter falls down when dropped, not up.