The “F” In Feedback Is …

F = “Follow Up”

Check in and see if progress is made.
Check and see if the feedback is actually helpful.
Tweak, assist, persist,
Until we see meaningful changes. 

It shows that you care.
That you care enough to actually check in.
That real changes in his/her actually deserve your attention and time.
That you are willing to work through it, with him/her.

That you are invested.