I really feel this is information she should have stressed to the class the FIRST DAY so we could have all adequately prepared.
Welcome to nursing school. Been there...thought that. This won't be the last time you run into something like that.
My micro teacher's advice was, when you have to read huge amounts in a hurry, read the first line of a paragraph and the last line, and anything in bold. If after reading the first and last line you don't understand the information, or it is something you need additional info on, read the whole paragraph.
Have a notebook next to you and jot down an outline of each chapter. Not in detail, just the outline. After you've outlined things, if you have time, start filling in the major points...then work back to minor.
The idea is to get as much covered as you can in the time you have left. You've seen her notes on the chapters she did cover, and you've heard her lecture. So you have some idea of the way she thinks. try to tailor your studying to her style.
I'm sure there are other ideas, probably more efficient, but this's what I can think of right off the bat.