When Hermione uses the Time-Turner she is making her 24 hour day even longer by going back into the past a few hours.
Let's say her time spent in the past has added up to one year (I know it couldn't possibly, but other wizards may have). If Hermione was supposed to die in 2100, would she still die in 2100 or would she now die in 2099 from using the Time-Turner?
A.K.A. is Hermione aging equivalent to the hours she has gone back, or does her body "reset" to the age it was at the hour she has gone back to?