I seriously don't think it's healthy... something must be wrong if the stem is that dark of a purple?

Here's my current concern : after using the distilled water, my friend came over & i had to shut off the fan so it wouldnt be obvious, I watched the temps from my remote thermometer, didn't reach over 85.7 ambient temp, who knows what it was on the canopy, but it certainly wasn't too the point where it burned my hand, just pretty warm... after turning the fan back on, checking 2 hours later after she left, the leaves all of a sudden are pointing up-ward, and SLIGHTLY curling up on the edges (only the top two leaves)
she also seemed a little yellow to me before, but she seems a tad more yellow now... but I could be crazy... I'm concerned the light is too close & that's why it's curling up... but the leaves pointing up would mean stretching, so if I raise up lights, then if it is stretching, it stretches more... the light was 2.5 inches away, now it is 2...

anyone's two cents would be greatly appreciated, I wanna get this thing under control so I can sleep easy