ATCO
It's not always clear that it either will or will not be ok.
After another minute or two tho, the likely outcome will be that much clearer.
Therefore, if a crew respond as you suggest (err....should be ok) and then say nothing further- I suggest you leave them to get on with it.
If it becomes clear to the crew that more track miles are needed- they will soon speak up.
What is a teensy bit annoying is just as you've got it sorted out, bit of speed brake or whatever, the controller suddenly starts to vector you.
I suggest that if you are still concerned, you ask the question again before vectoring in extra track miles.