Remember that the control of the aircraft always has priority... the same goes during go-arounds.
We are again and again told that the go-around procedure is a high workload situation for airliners, hence we're also told not to talk to, or give unnessecary instructions to aircraft executing a go around.
When it comes to wind shear, it is, or can be, characterized as an unusual situation, since we don't expect aircraft to follow a missed appraoch.... most procedures calls for climbs straight ahead at full thrust encountering such, risking overshoot of missed approach altitudes and deviation from tracks.
So from my point of view, and probably most ATCO's now a days, aircraft going around... give them time... don't expect them to do at described.... keep the all the "unusual situation" accronyms/abbreviations in mind, ASSIST/RISC/TAS/SSSS etc. etc.
Not handling a go-around as an emergency, just being a bit cautious with them.