Your plant is screaming that she needs more energy (light) and fuel (nutes). A couple of cheap and easy fixes will do her wonders. It's not too late to correct these defeciencies, as she is not ready yet. I'd lose the tin foil, and paint the growbox flat-white, too. (use waterproof paint)
She also needs you to read to her, all of the posts in these forums, so she can absorb the knowlege with you, lol.
Ok, just kidding about the last one, she wouldn't know what the hell you are talking about, anyway.