Queen of the Damned by Anne Rice?

In the Book Queen of the damned by Anne Rice there was a part where Akasha killed an elder vampire who betrayed her by crushing him to jelly (literaly) beneath her feet. How did she do tthat ? She would have to weigh as much as a tank, if not even as much as a small mountain in order to crush the guy as badly as it said in the book. Here´s what the book says :

"Quietly and slowly, she stepped on the back of his right knee, crushing it flat beneath her foot, the blood squirting from under her heel. And with the next step she crushed his pelvis just as flat while he roared like a dumb beast, the blood gushing from his mangled parts. Then came her next step down upon his shoulder and the next upon his head, which exploded beneath her weight as if it had been an acorn. The roaring ceased. The blood spurted from all his remains as they twitched. Turning, she revealed to me no change in expression, signifying nothing of what had happened to him, indifferent even to the lone and horrified witness who shrank back against the wall. She walked back and forth over his remains with the same slow and effortless gait, and crushed the last of him utterly. What was left was not even the outline of a man, but mere blood-soaked pulp upon the floor, and yet it glittered, bubbled, seemed to swell and contract as if there were still life in it."