dude i dunno whats going on with that plant.
stick it inside, go buy a setup of some kind, cheapest is CFL bulbs, compact flourescents is what it stands for, get a bunch of fixtures and a bunch of cfl bulbs. at least. that plant needs at least 18 hours a day of light but with the way it is id say stick it under a bunch of CFLs like i said, for 24 hours a day. in my opinion.. water it with just water and dont over or under water it, and once the soils moist put it in a bigger pot. im not sure what else i can say.
again im not in any way at all an expert so if im wrong someone correct me so i dont mess him up im trying to help him.