Here's my thoughts:
it looks like your using Scotts brand soil? I know it's good to give cannabis plants lots of aeration, and in soil this means bring on the perilite, when you transplant, I'd consider that, and maybe another soil choice.... as well as some pots that allow drainage, plants sitting stagnant in there own water is a bad thing, I can't see the bottom of those pots, but if there's no way to let them drain that could hurt you.
How hot did it have to get to hurt your little gal like that? I'm sure she'll bounce back, God made these little plants quite the fighters. I'll find out the joys of LSTing very soon when a couple of my primarily sativa gals start getting a touch bigger...
as for growing outdoors, hell yes, that's the only way I've ever done it, up until now that is. Outdoors in FL, no sir. Can't say i've ever done that before, not that I would be opposed to it, but with the heat and the bugs and the fuzz, I think I might honestly rather just fight the heat indoors like I am now!
Give me a good spot outside and I'll cover it in green fast then you can say johnny appleseed though!