"Where did she go just now?" 2/22/18
If 刚才 really translates to "just" this clearly indicates present perfect tense in English. So imo the correct answer should be "Where has she just gone?".
Both yours and the given one are correct.
This is still not accepted, but should be. 2020-03-12.
他刚才去了哪儿 should be accepted
This should be accepted in the listening exercise, but not if the prompt tells you to translate "Where did she just go?" since 他 is he and 她 is she.
Please upvote https://forum.duolingo.com/comment/29456371 if you agree.
6月7日– still not accepted
It's really rather silly that Duolinguo doesn't accept 他 or 她 when the user is not using the word bank and there is zero context to indicate the gender.
She just went where?
Where did she just go to.
"Where did she just go to?" Should also be accepted