Holden, It doesn't matter what kit it is, if the wine still has a little sugar in it and some yeast it may keep fermenting. You best bet might be to call the place you bought it and see if the can measure the residual sugar, the simplest way is with Clinitest tablets. If the residual sugar is > 0.2% the wine may not be fully fermented and just needs more time. You can use a hydrometer to measure residual sugar but it's not very effective. It's affected by the other dissolved solids and needs to be compensated for temperature.
Don't worry about the timing, if your fermentation temperature was a bit cooler it will take longer to ferment. There are a lot of variables.
Joe