只差一步她就可以变成明星了。——译成英文

She is(was) one step behind of becoming a star
个人感觉一楼with用的比较别扭，后面的3个回答语法不通

Only missed step her to be possible to turn the star.

She is one step away from the star can become

She would be a popular star within one more step.
只差一步她就可以变成明星了。
with in one more step 只差一步

只差一步她就可以变成明星了
Differing an one step her can become star

She's almost there -- a star.