她想好好休息英文可以译为 "She wants to have a good rest."

这句话的来源可能是类似于 "She wants to rest well." 的句子,其中 "rest" 是动词,意思是 "休息",而 "well" 是副词,意思是 "好"。

一些英文例句和中文翻译如下:

She needs to have a good rest after working so hard all week. 她工作了一整周,现在需要好好休息。
He wants to take a break and have a good rest. 他想休息一会儿,好好休息。
She's been feepng really tired lately, so she's decided to have a good rest over the weekend. 她最近感到很累,所以决定在周末好好休息。