did you know that, in harry potter, there is an in-universe rumor that draco malfoy's wife was impregnated by voldemort after they got married? (who proceeded to give birth to the antagonist of harry potter and the cursed child)literally how would that even work
do you know what that makes him?
All time turners were destroyed during the battle for the department of mysteries, and there is never shown any evidence of a time turner having the ability to press its user forward in time.
In fact, the only known instance of time magic being employed to take a subject from the past and bring them into the present, the closest thing to forward time travel seen in universe, resulted in the subject aging the full amount of time that they were moved along the time line, in this case 497 years.
Beyond those two observations, should Malfoy's wife somehow have acquired a time turner and gone back to when Voldemort was alive, there would certainly have been grave consequences. It's more likely than not that the mother would never survive her trip back to the present, that is, assuming someone in the present knew she had gone and was trying to retrieve her, and it's also possible she would not have survived her trip into the past, as moving through time in leaps larger than a few hours is extremely hazardous and unpredictable for other, more vague and magical reasons.
or in other words
literally how would that even work