nothing except that the fever possessing her rose higher and hotter. that 后面的主谓宾是啥?

nothing except that the fever possessing her rose higher and hotter. that 后面的主谓宾是啥?
she tossed restlesslyfor hours and comforted herself only with the thought that the
very next time hesaw her he certainly would propose. But the next time came and
went, and theresult was nothing—nothing except that the fever possessing her rose
higher and hotter.
为了大家更清楚此句的意思,我多放了二段话在里面,请问that后面的主谓宾是哪个?
possess 是什么意思?越详细越好,谢谢大家.
she tossed restlessly for hours and comforted herself only with the thought that the
very next time he saw her he certainly would propose. But the next time came and
went,and the result was nothing—nothing except that the fever possessing her rose
higherand hotter.