Moving Mars by Greg Bear 1993 Tor Book softcover 6 3/4 inches by 4 3/4 inches 500 pages. 
No writing tears or highlighting.

(from the back cover) 
She is the daughter of one of Mar's oldest, most conservative Binding Multiples - the extended family syndicates that colonized the red planet. But Casseia Majumdar has a dream of an independent Mars, born in the student protests of 2171. During these brief days of idealism she forged bonds of friendship and hatred that set the stage for an astonishing war of revolution on Mars.

Charles Franklin, too, was caught up in those days of passionate youth. Casseia's first love, and a brilliant physicist, he is so dedicated to science that he seeks to link his mind to the most advanced artificial intelligence in the solar system.

It will cost him a lifetime with Casseia Majumdar. It will teach him the secrets of space and time.

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