if everything else fails, just leave her under lights and eff off for a few days. dont water, or even look at her. Sometimes caring too much kills em, and a little neglect goes a long way. Happens a lot on first grows. I killed my first two grows years ago by over watering and giving too much a shit. lol. rule number one, dont over water. there weeds at the end of the day, and grow in horrible conditions and there used to it.
in my honest opinion, people who have a successful first grow, have researched enough to piss off on the watering, and any little bit that looks off, dont get too crazed by it and try to correct dramatically, you can kill them with too much unwanted "help".
remember, the longer you care enough to learn, the longer this site, other sites like it, and your plants will teach you... a master you will become, padawan, to padawan, we will someday be masters, but no matter how much you read, you need the trial and error to really learn the craft i have come to know. be patient. before to long, you will be like the old grow masters anywhere, and these plants will practically speak to you, hell some of these guys can look at a bent leaf and be like "badabing, badaboo" and its almost as if the plant told them what was up, that shit only comes with experience. its like anything else in life worth knowing, it takes time... good luck.